Letshuoer S08

Ever since 2022, a lot of new planar IEMs have popped up in the market, offering a new driver type for makers to use and try, and gives us as consumers more choice. Still, most of the earlier stuff had some tuning issues, and they were still somewhat costly. Now though, we’re getting some great sets at a good price, and today’s spotlight is gonna be on the Shouer S08. It’s wooed me over since the summer potafes (audio convention in Japan) where I got to demo it. This unit was bought second hand in good condition with my own money, and all thoughts are my own.

Unbox


The box for the S08 is a modest size, but it has a nice silvery 8 motif in the front. Slide the cover out, open the inner box and we get the S08 on top, with the cylindrical Shouer case in the bottom slot.
This case is plastic with a soft touch feel, twists off and inside it contains some generic, softer smokey gray silicone eartips, as well as a slightly harder, more Accoustune AET07 style tips.




S08 Appearance
The cable for the S08 has a copper color, it works well enough and fairly supple, but honestly it doesn’t match the looks of the IEM shells. We do get a chin slider, and modular terminations for 3.5mm and a balanced 4.4mm, and I always appreciate the velcro strap for cable management.



The shell of the S08 itself comes in black and silver metal, and whilst I like the silver version more, the test units I saw had some nasty scratches, so I reckon the black version will hide it better over time. The shape looks like if the Moondrop Lan ate too many big macs and got overweight. Despite that, it fits quite well in the ears and is fairly comfortable.


Source matching & Tip rolling

Being a planar IEM, the Shouer S08 is a bit more power hungry then a dynamic or BA IEM, though not to the extent of the Moondrop Stellaris or 7hz Timeless, but you’ll probably need an extra notch or two of volume in your source. Eartips-wise, both the eartip types included in the box worked equally well, but I opted for some Tangzu Tang Sancai tips for a bit of extra comfort.

Sound

A lot of planar releases kinda tried for a V-shape, or they opted for a bright tuning to highlight the resolution abilities of the planar, but the S08 takes a warm and more “analog” tuning profile that is very pleasant.

Graph

Bass
The low end of the S08 is a warm, enveloping implementation that plays well to its overall tuning profile. With other planars, sometimes the bass slam can feel a little blunted or lacking decay, save for some like the Tangzu Zetian Wu. The S08’s planar thankfully mostly avoids this phenomenon, with a midbass-focused tuning that gives a very “dynamic driver” like feel, whilst giving good bass detail, although the decay is still a bit shorter then dynamic bass. This low end adds oomph and some warmth to the overall signature without introducing muddiness, making it versatile for all genres.

Mids

The midrange is sort of the star of the show here, but we are seeing a quite novel take of pinna gain. You’d think that the early rise from 1-1.5khz would make for some weird artifacting, but it actually does quite well to introduce energy into songs, and bridging the gap between the lower and upper mids. To even out this early boost you have a very conservative pinna region, which you would think makes for a dull sound but no, it seems to be quite balanced, and the planar driver’s ability to resolve fine detail is able to still shine through. Instrumentation is usually slightly more emphasized than vocals in the mix, so it's more of a generalist take rather than one that shines in any particular genre.

Highs
Treble on the S08 is in general pretty reserved, save for some strategic clarity boosts. You’ve got some energy at the lower treble regions that shores up the lowered upper mids, giving that nice sense of crispness that also doesn’t go into oversharpened territory. After that, although the graphs suggest another spike, in real life the air regions are fairly rolled off, still giving a natural presentation but it mostly conforms to the warmer, more rounded off sound that the S08 is trying to present.

Soundstage & Technicalities
The soundstage of the S08 is fairly average, its width is a little more intimate (partially from the tuning as well), but you do get a pretty nice vertical separation of musical details, though it does depend on the song, being more prominent in simple mixes. Technical ability falls in line with other planars, but because of the tuning direction we can see that some separation ability is being sacrificed for consistency and coherence. I feel that it’s a very good balance though, and the slight detail loss is worth it for achieving a very agreeable sound that still extracts macro and micro-details rivaling multi-driver sets at the S08’s price level.

Comparisons

LETSHOUER S08 vs Simgot EM6L
The Simgot EM6L follows the Harman blueprint whilst the S08 treads its own path. You have a more subbass focused low end in the Simgot IEM, and it’s dynamic driver offers a more natural type of slam, where the S08 is more precise, and enveloping thanks to the midbass profile and planar tech. Warmer mids is typical of the S08, whilst the EM6L is more clinical, with a more prominent upper midrange energy. Treble on both is reserved but the EM6L nudges out a small win treble detail. Tech-wise, honestly both are very similar, and I am quite impressed that the single planar of the S08 matches the quad driver setup on the EM6L. If you want a more conventional driver setup which needs less output power, and like the Harman profile then get the EM6L, but if your preferences lean closer to a more warm tone, then the S08 offers up a very nice proposition.

LETSHOUER S08 vs LETSHOUER S12

The tuning philosophy is very different, as the S12 aims for a brighter sound emphasizing the clarity and technical advantages of its planar driver, whilst the S08 presents a warmer, more lush tone, with less airiness, but a meatier bass and less fatiguing sound. Technical ability seems similar on both, but the S12 has a slight lead in clarity likely due to its brighter tuning. Still, both sets are neck and neck to my ears, and the choice will be up to whether you want a bright sound or a warmer, more naturalistic implementation.

LETSHOUER S08 vs LETSHOUER S15

Both IEMs are tuned with a similar intent for a warmer, less fatigued sound. The S15's bass is a bit more well controlled, and can reach down to the lower registers a bit better. Midrange on both are pretty similar, with the treble performance of the S15 giving some more treble detail. Technicalities is where the S15 warrants itself, having better imaging, vertical instrument placement and increased detailing. Honestly though, I'm not sure if these marginal improvements are worth thrice the S08's asking price. Whether that means the S08 is a great value that punches above its weight, or that the S15 is a bit underwhelming, I leave that for you to judge. Nevertheless, if you want a straight upgrade from the S08, the S15 is a good choice.

LETSHOUER S08 vs Moondrop Stellaris

Tuning wise, the two IEMs couldn’t be any more different. The Stellaris has a much more conservative bass, and its a bit blunted as well, whilst the S08 is more thumpy and lively. Midrange of the Stellaris is upper mids-focused with a lot of, frankly, very odd uneven peaks and dips that make for a very wonky signature typical of earlier planar IEMs, whereas the S08 is much more mature with a warmer, well-executed midrange. Treble on the Stellaris is sparklier compared to the S08’s reserved nature. Overall, the S08 is the clear winner on tuning, with a pleasant sound whilst the Stellaris is kinda everywhere and super messy with a disjointed signature. Technicalities wise is where the Stellaris takes the edge with slightly better separation and imaging. I will take the S08 any day over the Stellaris though, I really don’t know where Moondrop was gonig with this, and in a rare upset the Stellaris’ tuning was its biggest weakness, whilst Shouer shows they have better mastery of planar technology with the S08.

Conclusion

From 2022, planar IEMs have gone from a rarely deployed, exotic technology to a mainstay in the audiophile world, often having superior bang-for-buck compared to conventional setups (at least in the low to mid end price range, after that it kinda evens out), with some caveats such as bigger housing size and tuning deficits. The LETSHOUER S08 shows that the planar IEM has matured a lot, offering a very pleasant and lush sound that avoids any weird uneven peakiness and artifacting, whilst still delivering on the technical abilities in a good balance. Its tuning proves that you don’t need to closely match the tuning target to make a great signature, so long as there are sound tuning fundamentals. All of this for a very attractive 100 dollar price tag, including some very useful goodies like a modular cable. The S08 is able to hit all metrics of a good product: good sound, good technicalities, good accessories, good price; with little to complain. As such, it has rightfully deserved my new default $100 dollar recommendation.

For more insights, extra glamour shots and eye-candy of the IEM, please check out my video review:

LETSHUOER S08 (black)

Let's get started. So first off, let me thank Betty and @LetShuoer Audio for providing me this unit for review. I'm very appreciative for the opportunity, and thankful they did. My opinions are unfettered, and unbiased, and I've not been told how to structure my impressions and thoughts. So buckle your seatbelts and prepare for a 100% unbiased review with heartfelt observations, and now on to the fun stuff.



The unboxing experience was quite simple. Nice box. Nice design. The hard black box had the Letshuoer brand on the front, and on the inside, we get some paperwork and a QC approved triangle. The IEMs sit on foam cutouts, and the hockey puck style metal carrier is centered right below. Upon opening up the puck, you get a very nice cable by Letshuoer, with branding. Now the TFZ style 2 pin connector isn't my favorite, as I prefer recessed or standard 2 pin, but this one is fine, and the cable is fairly thick, quite pliable, and conforming. Initial impressions were done with the stock cable, as it's really nice, just like the stock cable providing in the Letshuoer S12 (2024). I felt this cable gave it a bit warmer character than I usually like, so I used it for my initial notes and music listening, then eventually changed it out for a Tripowin Altea cable, but if you're not into cable rolling, you won't have to with the stock quality. It's also modular, with 3.5mm and 4.5mm terminations. The tips are a nice selection, and as is always the case, they are too small for gigantic ear holes like mine, so I admired the quality of the stock tips, while rolling to the AZLA Crystals. Still, for the asking price of this IEM, the accessories are very high quality. The shells are very small! They are quality metal shells, with an 8 design, signifying the S08 model type. Small and elegant is how I would describe the shells and design. They are quite ergonomic and comfortable in ears, and so this is a sector I'm quite pleased with.



So now that we have the unboxing experience out of the way, let's move on to the sound, shall we? That's what you're all here for anyways!! I know I am! So let's begin...

THE SPECS :

Letshuoer S08:

Technical Information:​

Letshuoer S08 frequency response graph courtesy of @cqtek

PRICE : $99.00

Available for purchase at this location.

The Gear :

What did I use for my listening sessions for my review??

I'm a huge believer in source rolling to optimize your sonic experience, so for this review, I featured only one source that was tethered, while the other three DAP sources remained untethered. This is because the S08's planar magnetic driver isn't very hard to drive, so it doesn't need extra juice or power to get it to volume. So the sources used would be the Sony NW-A55 + FiiO Q1 II amp with a Lunashops Palladium Graphene interconnect. Followed by the Cayin N3 Ultra (Solid State, No EQ, M gain, Slow roll off), Hiby R3 II, and the Sony NW-A25. All of these DAPs provide a high quality, high fidelity sonic experience.



Music used for the review and all my reviews in general?

Ezra Collective - Where I'm Meant to Be
Robert Glasper - Canvas
Alfa Mist - Antiphon
Hugo Kant - Far From Home
Alfredo Rodriguez - Coral Way
Bob Marley & the Wailers - Survival
Rob Van Bavel Trio - Dutch Weather
Junior Kelly, Bounty Killer, and Capleton - The Good, The Bad, and the Blazin'
Dominik Eulberg - Avichrom
Abysmal Dawn - Phylogenesis
Megadeth - Rust in Peace
Drive By Jehu - Self Titled
Cognizance - Phantazein
Adon - Adon
In Aphelion - Reaperdawn

SOUND IMPRESSIONS :

Dynamics : 4
Resolution : 3
Details : 3
Instrument separation : 4
Imaging : 4
Sibilance : 1
Soundstage : 4.5

Overall score : 4

BASS/MIDRANGE/TREBLE :

The S08 came to me with some mixed reviews, as far as the dynamics and treble extension of the IEM. I've got many planars in my collection, with includes the Tangzu Wu Zetian, Letshuoer S12 (2024), HZSound Luna, KZ PRX & PR2, and the incoming FiiO FP3. I've had the NiceHCK F1 Pro, RHA CL2, and 7HZ Timeless, so as you can see, I like my planars. Now with all of these, almost universally, they have a degree of "planar timbre", very quick note decay bass, and shimmery treble, of varying airiness, and almost all of them have a degree of incisiveness in the midrange. The most polite of all of these would be the KZ PRX and the HZSound Luna. The brightest would be the KZ PR2, RHA CL2, Timeless, and above all of them, the F1 Pro. So I was told by several reviewers that the treble was rolled off, safe, or dark, so when Betty approached me about doing a review, I was curious but hesitant. Now the reason I said yes was because @thaslaya was lending me his unit, so I figured if I didn't like it, I could always just return the unit unused to Betty and Letshuoer. No harm no foul. Well, come to learn, I LOVED IT!! So when I popped these little shells in my ears and began a critical listening session, a smile overtook my face. Again, I have a lot of planar magnetic IEMs, and that includes the more expensive big brother to the S08, the S12 (2024), which is an IEM that sits quite high on my list of favorites and also places high in my rotation. So I'm not easily swayed, but in this case, I was.

The first thing that struck me was the bass response. It was very hearty, with much slower note decay that you usually get with planars. Now, let's not assume this is a bad thing. It's not. It's quite similar to the bass response of a dynamic driver. One of the universal knocks of planar bass is the elasticity and the fast note decay, which leaves the listener with quite resolving and punchy bass, but lacking in dynamics, heft, or sub bass thump. In the case of the S08, the bass is quite thumpy, has a darker dynamic, and though not the most resolving, it provides sub bass thump, some punch, and still enough incisiveness to keep up during busy tracks and double bass kicks. So yes, it's slower, but that provides a bit more dynamism in the low end to make the bass on most genre tracks a very pleasing experience. It's not necessarily heft, but impactful, and as anyone who has listened to a planar IEM knows, this is something you embrace when you get it. This is fantastic bass that is satisfying! It just trades elasticity for thump.

The midrange is where we get a very clean presentation. In comparison to it's big brother the S12 (2024), it's less thick, less "muddy", and less warm. Now there is a warmth to the midrange that is unmistakable. So this isn't a crystal clear dry midrange, where the clarity and stage is pristine. There's a level of warmth that provides a musical and dynamic program. So it's not brimming with details, separation and bite. The upper mids lack a bit of bite, and crispness. It's tuned to deny the planar timbre that can and does arise from this type of loose tuning of a planar magnetic. It's what you get from the Timeless, the F1 Pro, or the CL2. Now, this is present to a lesser extent with the S12 (2024), but the upper mids are a bit bitier and strident than the safer tuned S08, but this really is what the S08 needs to stand out and separate itself from the sea of budget range planar IEMs. So female and male vocals have an emotional dynamism that's very pleasing. Mid bass and lower midrange has a weight that's welcomed and fascinating, while the tradeoff is details don't always pop, and the separation in the midrange floor isn't as transparent as some others. Upper mids again. are musical, incisive, and present, while forsaking bite and crispness, and replaced with smoothness.

The mentioning of smoothness brings me to the treble of the S08. Here is where as a treble connoisseur, I will respectfully disagree with many a reviewer of the S08. The treble is actually incisive enough, extended enough, and airy enough to NOT sound dark, lazy, or recessed. It's just smooth but PRESENT. I liken this response to the AFUL Explorer, where you get a very similar treble extension and shimmer that's not crispy, in your face, or hyper incisive that it produces the dreaded "planar timbre and tonality". What you get is a very mature, tonally correct, and airy treble that behaves. Now it's not treble that goes on for days, that's ethereal, or wispy. It is none of that, but it does show itself as present and detailed. Whereas the midrange warmth can hide details, the treble smoothness doesn't hide details at all, and will present the overtones and resonances with a preciseness and a presence that's quite satisfying, even to a treblehead like myself. I think it probably walks the line, but never crosses over into dark or rolled off territory. The treble, once more, is not rolled off or dark, but smooth and articulate. You never get any sibilance or crispiness, and the soundstage is still rather full and wide despite the treble tuning. Now it's not the deepest, but depth is perceptible. Not the tallest, so it's not orbital, but there's enough front back side to side, with enough warmth, to provide the listener with an enveloping stage and musicality that makes the Letshuoer S08 bely it's price point, and makes it a contender for BEST price to performance planar IEM. Imaging is good to above average, as is the layering. Is it top rankin'? Probably not, but there's enough technically to pick out instruments in the mix, and never get a feeling of cogestion or blur. Yes folks...it's that good.

OVERALL :

There is no hyperbole to the previous remark. The S08 is just that good. That engaging. That fun! I don't think I used that word enough in the aforementioned review. This is a darn fun and musical IEM that makes your head bob, your foot tap, and your body shake. So if you listen to reggae, jazz, hip hop, soul, pop, or dance, it's going to provide you with a feel goods. The bass will be present and engaging, the mids will provide emotional cues, and the treble will never be harsh, but will keep the high end interesting and smooth. Listen to metal? No problem! The S08 will keep up with the busier or congested of tracks, and though it won't be a detail monster or technical titan, it will emotionally grab you by the feels, keep you engaged, and it won't blur, smear, or shout. Three things that are the bane of metalhead listening sessions. This is about banging your head, and well, this is what you will do with the Letshuoer S08. GUARANTEED!

COMPARISONS :

Letshuoer S12 (2024) : The bigger brother of the S08 costs $199.00. It's also a limited edition limited to 2024 serial numbered units worldwide. As an owner of this particular IEM, it makes sense to do a comparison. So the S12 (2024) sits loftily high in my rotation. It's a more mild V/moderate U shaped, so the bass, primarily the mid bass, is much more present and commanding that the S08, but also that does create more bleed and more warmth into the lower midrange, which can cause the midrange of the S12 to appear less clean and more veiled. Now I think that this tuning choice is combatted by the extended treble response, which is far airier, shimmery, extended, and less mature than the S08, so you're trading smoothness for sparkle. Because of this, there are times when the S12 can get a touch sibilant, and can also show some planar treble, but in my opinion, it's never offensive. It's also musical, with a more orbital soundstage than the S08, but at the detriment of clarity in the midrange, but you get more clarity and details in the upper mids, so there's constant tradeoffs. Technically, the S12 is superior, but I wouldn't call it more fun, because they both have their hands and feet strongly on the side of musical. The determining factor comes down to do you want treble sparkle, or treble smoothness? Do you want to spend $100 more for the limited edition, but maybe a more troublesome fit? It's close so...Advantage : TOSS UP.

KZ PRX : The PRX can be purchased for approximately $70.00, with sales taking it down to as little as $55.00. The PRX and the S08 have more in common that both being planar magnetics. They both provide a smooth treble approach, but the treble of the S08 is more incisive and has more air. The PRX is tuned to be very safe, and also does not suffer from planar timbre. The midrange is also a tad more recessed with the PRX than the S08, with much more sub bass and mid bass punch and heft, so you feel the bass on the PRX more than you do the more balanced S08. So that does mean that the PRX is more a top blunted v. What this does is make details even less present that the S08. The PRX presents a 4th generation planar magnetic, with very good technical performance, but it's tuned to be "new meta", so you lose the incisiveness and the extension you get with the S08, and what you're left with is a safer, bassier, and equally musical affair, but it falls short of the stage and imaging of the S08, while not being as engaging. Is it cheaper? Yes. It is bassier? Yes. Bassheads will love is planar bass. But is it more engaging and detailed? No. The S08 is more balanced, more detailed, and more engaging than what I feel is the more boring KZ PRX. So when push comes to shove, I'm gonna reach for the S08 every single time. No-brainer, and definitely worth the extra $20.00 or so. Advantage : Letshuoer S08.

CONCLUSION :

So if you've been turned off by planars for being too shouty of tonally off in the past, the S08 is a good place to make your return in confidence, or if you've never tried a planar magnetic, and you don't know where to start, then the S08 is the perfect starter kit for your new experience, and at the price point of $99.00 (and less during sales season), it's one of the more affordable IEMs that provide you with excellent musicality, smoothness, and performance. It's now one of my favorite IEMs in my rotation, and never fails to impress me with toe tapping fun, without fear of killing my eardrums with skreech, crispiness, or off timbre, so I share my recommendation and welcome you to fun!

Thank you so much for reading and remember to be water with your audio luv! When you do...AUDITORY ZEN UNLOCKED!

I will write my experiences and notes for the LETSHUOER S08 sent to me as part of the Audio Geek Turkey Group's Turkey Tour. Many thanks to them for providing me with the opportunity to try it on this tour.

Letshuoer designed this , which was inspired by the 8 design, to celebrate their 8th anniversary.
Letshuoer, who is very prone to planar making and experienced, let's see what they promise us.


Technical Specifications:

Driver Structure: 13mm fourth generation magnetic planar.
Impedance: 26Ω.
Jack Connector: It has a changeable structure with 3.5mm and 4.4mm connectors.
Sensitivity: 105dB/mW
Frequency Response: 20Hz-40kHz
Cable: 2 Pin 0.78mm silver coatings in a spiral structure.

Letshuoer S08 Package Presented

iems itself inspired by 8 -S design in cnc with aluminum structure
0.78mm 2-pin silver coating cable
3 pairs of White Vocal Tips (S,M,L)
2 Pairs of Black Balanced Silicone Tips (S,L)
3.5 and 4.4 tips
Black matte plastic storage box
Warranty documents.




Sources Used
Btr 7 Hiby R4 Fiio K3

Comfort: Letshuoer The round form used in the planar that we were used to before
is a little horizontal here and the transition has been made.The rectangular structure is ovalized from
the sides and ovalized to catch the S-8 form.
It fits very comfortably in the ear and does not lose anything from ergonomics.
The 4-way brown cable is quite soft and the input connector of the iems is made of hard plastic.
The jack input part is provided in the box with 3.5 and 4.4 connectors that can be
removed and replaced, and the screw system outside has been used to add more durability.

Bass: Although it seems to come out with Letshuoer S08 basses, it does not feel striking enough.
Although the depth and resolution are high and feel natural,
its extension is a little more fragile.
Although it is very tight and valuable, I cannot say that it likes bass, but it is close to it.
At this point, the comparison is made by taking another planar, hidizs mp145, as a reference,
I honestly could not find its impact and extension at a sufficient level.


Mid: This is where we feel the instruments very comfortable.
It sounds smooth and distinct. Vocals are a little closer, consistent and clean.
A little warmer. Although there is bass leakage in some parts, it is not very disturbing since it is not strong.
This was the part I liked the most in the headphones.

Treble: It cooperates very well with its general dark structure and softened trebles.
Although I did not come across any hissing,
it does not create a scratching problem when the trebles start to shine.
It is quite refined and smooth. This dark structure Maybe in some cymbal-violin-piano-like high-evolving thin notes,
the loss of detail due to rolling and softening may make treble lovers feel stagnant, but I do not have any problems.


Conclusion: Considering its price, Letshuoer S08 is in a preferable class for me. First of all, it is exempt from high trebles, it tried to offer as much detail and cleanliness as it could in the midrange and it fulfilled this as well. I would have preferred the necessary amount of bass extensions to be more tactile. The nice box presentation, the cable and the fact that it comes with 3.5 and 4.4 and that it is modular may be an extra reason for preference.

Quick Disclaimer: I am a beginner who just casually listens to music without thinking much about it and this is my second review. I've asked for feedback and criticism on how I construct my reviews and have applied them here. I may use terminologies that are more personal but will do my best to describe it. These are also my own opinions, I did not read any reviews prior to making my own(basically going in blind) so if you have your own comments or perhaps any feedback regarding my review or the IEMs, please don’t hesitate to share your thoughts.

The gear I’m using is just really simple: Ordinary Laptop, Roseselsa 9039 Amplifier DAC(I will be using this for the rest of the reviews) and the LETSHUOER S08.

Big thanks to LETSHUOER for sending the S08 over to our local community for the review tour! Looking forward to working together with you!

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So let’s begin the review.


The LETSHUOER S08 is the first planar IEM that I’ve ever listened to, the typical IEMs I have are either single or dual dynamic drivers but never planar. I don’t quite know the big difference between the two drivers other than the fact that one is thick while the other is thin(correct me if I’m wrong there). The IEM is priced around 99$ USD which is 30$ more expensive than the DZ4 that I previously reviewed; then I thought to myself “does the price point really make a difference? and what is this hype about planar driver that I’ve been hearing around?” Well, I’m about to answer my own questions.

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UNBOXING EXPERIENCE

The packaging has a nice black and silver accent, similar to the DZ4 the outer box sleeve coincides with the name given to the IEM which is the S08 but the design is what stands out. You can draw the “S” “0” and “8” from the design similar to how TOYOTA does it with their badge. Whoever designed this outer box sleeve definitely deserves a raise. The Hi-Res Audio certification can be found on the right face of the sleeve which is a bit odd since normally you’d see the badge in the front but hey it’s there.


Flipping the box over, you’ll be presented with the specifications of the IEM, from the sensitivity, impedance, frequency response, chassis material, drive and cable. Still no frequency graph present which would have been a nice touch for comparison and references but if you’re an expert just by reading at these specifications you might be able to come up with a graph on your own.


The unboxing experience once again feels like a brand new iPhone but you bought black instead of white(which is really the same unboxing as the DZ4). You’ll first see the IEMs with ear tips attached(first thought is that the shell is made out of metal and I was right, to be specific it is CNC-Milled Anodized Aluminum), and then the carrying case; inside the carrying case contains the cable(which is flexible and almost has the same feel as the stock cable from the Salnotes Zero), 2 sets of ear tips(2 pairs for balanced and 3 pairs for vocal) and the two modular jacks(3.5mm and 4.4mm).

The case is exactly the same one that’s used in the DZ4 as well as the ear tips, although the balanced ones do feel a bit more softer than those found in the DZ4, they’re still of the same material and quality. And yes the case does smudge easily; I would recommend bringing a bigger bag if you choose to bring the case along since it is a bit bulky but hey it does a great job in keeping the IEMs safe.


Another thing I love about the S08 design is how the faceplate also lets you know that this is the “S08” as it has the same principle as the outer box sleeve where you can draw out the “S” “0” and “8”. On the left earpiece it has “LETSHUOER” while on the right it just has the letter “R”. I’m not sure if this is intentional or pure coincidence since LETSHUOER starts with the letter “L” so that earpiece goes to the left and the other obviously has the letter “R” so it goes to the right. Probably just me but if it is intentional then whoever designed this should also get another raise.


Speaking about the cable, yes it does feel similar to the stock cable found with the Salnotes Zero but much more flexible and a higher build quality; the connector is modular which I find quite the unique gimmick since you can switch between a 3.5mm or a 4.4mm jack. All you need to do is to align the bump and 4 pins with the groove and connector of the cable and twist the collar to lock it in place. If the connectors don’t go all the way in don’t force it and double check to make sure everything is aligned as you may run the risk of damaging or bending the pins.

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FIRST IMPRESSIONS WITHOUT ROSESELSA 9039 with 3.5mm jack

My first impressions when listening to the IEMs for the first time is that it’s definitely different from dynamic drivers, this IEM does have a 13mm planar magnetic driver and I can immediately tell that this IEM NEEDS a DAC and AMP(I couldn’t go back to using it without the Roseselsa 9039).

When not using the Roseselsa 9039, the first thing I noticed is that the sibilance is sharp. While it doesn’t hurt, some might say that it’s too much but for me it’s alright, this is also based on personal preference since the songs I listen to are a mix of multiple genres and artists; some might have a sharper sibilance while some don't.

The mid-range does fall a little bit behind, the IEMs still do very well in staging, imaging and depth; the instruments especially in songs with lots of energy can bleed into the vocals and oftentimes make it muddy. While the IEMs do have a good staging, imaging and depth, this can make listening to the vocals a bit difficult since there is an imbalance in between the vocals and instruments.

The bass and sub-bass are there, although it’s not as punchy as you might think for a planar(I mean it needs more power) the decay does differ from song to song but I have noticed a tiny bit of prolonged decay, this is personal preference and I don’t mind having a bit of decay; then the feel of the sub-bass is just a bit, it won’t shake your eardrums but it’ll give you just a bit of vibration.

While these are planar drivers, you don’t have to necessarily buy a DAC and/or an AMP since these IEMs are good to go, but as always, if you want to make the most out of what you have then it’s best to give it what it needs. This is similar to the saying “I paid for the whole speedometer, so I’m going to use the whole speedometer” or rather “might as well use it as what it intended to be used”.

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USING THE ROSESELSA 9039 with 3.5mm jack

The vocals are what stood out most here with strong emphasis on the secondary and background vocals, while this is a great feature about the IEMs, some vocals tend to bleed into another which completely gets rid of the main purpose of having the main vocals; they are supposed to supplement or support but it just feels like they want to grab the spotlight. The muddiness was gone which is noticeable especially for someone who is keen on vocals, it’s like the filter has been removed and you get the sweet sweet vocals; not as clean as ASMR level vocals but hey it’s good enough to listen to.

When talking about the mid-range, all I can say is that it is beautiful. The instruments are well separated and no longer bleed into one another and vocals. Oh and I did notice that the instruments have been much more lively, the pressing, striking and strumming are more refined, it brings out the pureness of the instruments and does not give the impression that these were made electronically using software but rather a physical instrument was used and recorded. The performance is quite similar to the DZ4 but comparing between them, I would say that the DZ4 still does a better job in giving that “dimension” that a song needs.

I also want to mention that this IEM can handle high energy songs since as stated previously, the instruments are well separated. You get to hear each individual instrument that is being played. Both the DZ4 and S08 do a great job in sound staging, imaging and depth; it feels like the S08 does way better than the DZ4 since it has a better mid-range scale.

Lastly, the bass and sub-bass make bassheads(like myself) satisfied, it has a bit of a punch and feel when listening to low frequency songs. Comparing this to the DZ4, the S08 makes up for what the DZ4 lacks; however, it still falls a bit behind compared to the KZ Castor Bass. Seems like an unfair comparison right? Sort of but hey depending on what your preferences are, you’ll always be looking for that certain element that gives you that satisfaction.

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USING THE ROSELSA 9039 with 4.4mm jack

When using the 4.4mm jack, I noticed that the vocals are cleaner, I get to hear more of the main, secondary and background compared to using the 3.5mm jack. It’s also worth mentioning that the volume has also increased so you might need to make a bit of adjustment so as to not hurt your ears. Separation among the vocals still remains the same.

Mid-range seems to be a bit more lively. This is not much of a significant difference but hey one is better than none right? Even if it's just a tiny bit of improvement, the fact that there’s change means that it’s getting better.

The 4.4mm jack really improved the sound staging, imaging and depth; I can say that it has surpassed the DZ4 which already had a great sound staging, imaging and depth. The only complaint I have is that you’d have to have a DAC and/or AMP that supports a 4.4mm jack plug else the 3.5mm is what we have to use.

Bass seems to be the same but there has been a slight improvement to the sub-bass; there is a bit more feel to it when listening to songs that are heavy with low frequencies, but even if you don’t go down that path; songs with sub-bass preset will be shown and be felt by a bit.

Overall, I can say that these sets of IEMs demand an investment; this includes a good DAC and/or AMP and support for both 3.5mm and 4.4mm audio jack. For an IEM that costs 99$, I find the price reasonable since you are paying for a planar driver which is normally more expensive than dynamic drivers and require more power to get the most out of it but for the build and sound quality I’d say it’s worth saving for. I really do wish I have another set of planar drivers to compare this to but the best I can do is to compare it with Dynamic Drivers, but if I told anyone that these were DD then they'd believe me because the sound quality is just so so good that it's even better than the dynamic drivers.


I took this picture during our mini audio meetup at a local cafe.

Blup blup 𓆟 and happy listening!

The packaging is attractively simple and well-documented. Inside, you'll find the S08 and the standard plastic case. However, I have a preference for the older Letshuoer cases. I found the unique looking shell to be adequately comfortable, build is solid with an all-metal build. It come with different size tips in two types. The cable is very attractive and being modular is a feature I appreciate greatly.

Sound:
The bass hits with significant impact and satisfactory speed. It boasts a broad and profound sound, akin to experiencing a full-range speaker complemented by a subwoofer in the background, delivering the music with vigor.
The sub-bass maintains a fair amount of control while delivering a pleasant rumble; the bass in general has good detail and texture.
The midrange is robust and rich, offering a natural warmth and tone, though it may be mildly recessed depending on the music. There are still decent details, but overall, this is not a technical IEM; it's full and enjoyable.
Treble is decently extended with fair amount of air and sparkle, but its presentation is rather smooth and laidback for the most part it is fine.
The soundstage offers average imaging but lacks an open and expansive field; it is relatively small and can become congested with complex recordings.

In a nutshell:
The S08 remains an enjoyable planar that requires power to reach a decent and pleasurable level. It's not suitable for all music genres and definitely not ideal for gaming. It's simply enjoyable—take that for what it's worth. In my view, the S15 and S12 Pro are significantly better.



Video Soon!

Disclaimer
Please note that I am not an audiophile, and this review does not delve into the technical aspects of the IEMs. My impressions are based on my personal preferences, and others may have different experiences with this product. I also have a very limited experience with audio products so please take this review with a grain of salt.

The Letshuoer S08 was lent to me as part of a review tour in the Philippines.

Price: 99 USD
Link: https://letshuoer.net/products/lets...tor-earphone-for-audiophiles-musicians-studio (non-affiliate)

Part 1: General Product Details

Package Inclusions

• IEM shells & cable
• Carry case
• 6 pairs of eartips
• 4.4mm jack

The IEM Shells

• The shells are made of black cnc-ed aluminum. An “S” design is on each of the faceplate. Each earpiece has a different wordmark debossed on the faceplate; on the right you have the Letshuoer logo, while on the left you have the “Letshuoer” word.
• The earpieces weigh ~6g, each side seems to have about a 0.1g difference? After being able to use heavier headphones, I think I’ve gotten used to the weight easily. My last reviewed headphones was the NF Audio RA15, which were at 9.4g!

The Carrying Case

• The carrying case is a small round cylinder with a twist-to-open lid. The lid has the name logo of Letshuoer front and center.
• The carrying case is made of a matte plastic covering material that is prone to marks, so you have to be careful or you might scratch it easily.
• It is also very bulky as a carrying case, weighing at 76g and has a dimensions of 8cm x 8cm x 3.5cm. I think it would be better called a storage case

The Cable

• The cable is pretty good! It doesn’t feel cheap at all, and is wound and braided very well. There are no kinks or bends to it and does not tangle easily. It has a straight 3.5mm jack at the end.
• It is made of braided brown rubber-covered cables that terminates with a 3.5mm jack and 0.78 2-pin. There are other available variations of this cable with 2.5mm and 4.4mm available when purchasing the set
• The chin clinch and splitter are made of plastic.
• The jack can be switched between the included 3.5mm and 4.4mm! You won’t get the orientation wrong, as there’s a peg-and-hole to guide the insertion of the jack to the cable as well as an arrow as to where that peg is.

Part 2: Subjective review


General Usage Impressions

• I like how consistent Letshuoer is with their packaging. The unboxing experience is similar to the DZ4 headphones.
• The nozzles are a bit on the large size, so I needed to use smaller eartips. My MS wide-bore eartips were too large for this pair.

Sound Impressions

• The bass is deep and thick, I really like how full it is. There’s a satisfying amount of bass rumble, but not to the point that it overpowers the higher frequencies.
• The higher frequencies sound warmer, and doesn’t have the usual vibrance I am used to
• There’s a good amount of instrument separation and details
• The soundstage is narrow, to the point that I feel a little claustrophobic. It was a little difficult using this for competitive gaming since I’m used to wider soundstages to pinpoint distance and location of opponents and allies.

Final Thoughts

The tuning of the Letshuoer S08 is new to me, it’s like dark coffee with a hint of fruitiness. The deep bass intermingling with clear vocals and details that create a vibrant sensation in my head.

And though I mainly like headphones with more soundstage, the S08 was a pair I thoroughly enjoyed using while I went through my playlists. It’s definitely not for competitive gaming, but for a more personal experience.

The Letshuoer S08 isn’t the cheapest planars on the market, but it delivers a different sort of tuning, more bass less treble, less brightness and more warmth. Have a taste and you’ll see, or in this case “hear”!

General/Packaging/Build/Comfort
Letshuoer is a company that was founded in August 2016.They are specialised in making in ear monitors for stage use but they do have in ear monitors for audiophiles as well. They were called Shuoer previously and most of those who were in the community for a little while should be aware of it.
Today I have with me the S08, which is one of the 8th anniversary products which launch alongside their 8th anniversary campaign. The S08 is a new range which I believe is positioned somewhere between the S12 as well as the S15.
The packaging is minimal, but the overall design does look premium.
You will find two types of ear tips in the box, wide bore and narrow bore. The cable is silver plated copper cable in modular form, plugs provided are 4.4 and 3.5mm. The cable itself does seem quite premium and not cheap looking. The included 3D printed storage case looks premium as well. A very good unboxing experience overall.
The whole iem is smooth and there aren't any sharp edges. In terms of comfort, S08 fits very well in my ears and I have no discomfort even wearing them for long listening sessions,do take into consideration that everyone’s ear is different and if it fits well for me doesn’t mean it will fit well for you,but fortunately, Letshuoer does throw in plenty of ear tips choices,so i’m sure there will be one that fits eventually



Gears used for this review

• Letshuoer DT03
• Dita Navigator
• Aune S9c Pro
• Letshuoer S08 Stock cable and Eartip

Foreword
My review is solely based on what I hear via my equipment and I never consider my reviews to be objective in any way rather a subjective approach. Do take into consideration that everyone’s ear anatomy is not the same, so the psychoacoustics perception might be different as well, but i believe it will not stray too far



Sound
The S08 is warm sounding to my ears, a departure from the S12 which is bright and energetic. The tonality of the S08 is quite good for a planar, the planar timbre is very minimal, in fact you have to try very hard in order to spot it. Well done! The overall note weight of the S08 is really good, thick sounding, but the treble might come off as slightly dark sounding to some who are used to a bright and energetic set.



Bass

• The bass rendition is nowhere near basshead level but it certainly provides enough "fun"
• Bass extension is good and the sub bass rumble can be felt, definitely no slouch when it comes to EDM
• Bass has good texture and note weight to it,it is also tight and clean
• Mid bass has got thump to it and the transition between the sub and mid bass is quite balanced without sounding incoherent
• I personally find the tuning of bass is done right to my preference,somewhere between fun and audiophile but not venturing into the basshead category
• It has got the thump and impact which is fun especially when I’m gaming with it or watching some TV shows

Mids

• Timbre sounds correct to me and the midrange is neither too forward nor recessed
• Vocal doesn’t sound recessed, both male and female vocal has good texture to them,doesn’t sound thin at all
• Female vocal however does lack a bit of energy due to the slightly subdued upper mids
• Bass does bleed into the mids slightly but not to the point where it upsets the overall experience
• In general,i find that the mids are smooth from the lower mids to upper mids

Treble

• The treble is smooth, it has enough energy but not to the point where it is harsh and sibilant, borderline dark-ish treble to my ears
• Detail retrieval is average for the asking, can be better in my opinion, but due to the nature of the tuning, i can see why it is in such way
• But to put it as a whole, the bass, mids and treble all together, perhaps this is how and why it sounded quite natural overall

Soundstage/Imaging

• S08’s soundstage sounds slightly out of head and quite open,but a little lacking in depth to give the perception of big soundstage,but overall it is quite good
• Imaging and separation is good but can be better

Driveability

• S08 is very easy to drive and it does sound decently loud even from weaker source like Apple’s Lightning Dongle
• Switching over to Aune’s S9c Pro ,with decent driving power,bass seems to tighten up a little and better control is exhibited, in a way, it is quite scalable with power as well as source
• Using it with Letshuoer’s latest dongle, the DT03, it has good synergy as well, very musical to my ears and the soundstage rendition especially, very 3D-ish

Comparison (TinHifi Dudu)

• The Dudu is TinHifi’s latest budget planar which is priced around the same range as the S08
• In terms of sound profile, the DuDu does have slight V shaped profile borderline bright on the treble response
• Overall note weight is slightly thinner compared to S08 and also slight hint of planar timbre
• Soundstage performance is more or less similar with S08, wide and slightly lacking in terms of height
• Imaging both are on par
• Mids are slightly thinner sounding on the Dudu

Final Thoughts
Having tested several planars from different brands, it’s safe to say S08 is the one that i will pull out and listen to when I just want to listen to music and not analyse the tracks. Although it is not the best when it comes to the technicalities, it is certainly a pair of very enjoyable sets of IEM. I have tried gaming, watching some videos with it, and it handled all of it with ease, positional audio in gaming, explosions from the games and movies, easily handled. Do I recommend this? Yes certainly! If you have yet to try planar, or you like a warmish sounding planar IEM, this is the one to get.

*The S08 is sent over by Letshuoer for the purpose of this review. I thank them for the support and opportunity as always

Head over to the official store if you are interested in getting one, it is currently being priced at 99$:
Letshuoer S08 Official Store Link - Non Affiliated
Letshuoer S08 Linsoul - Non Affiliated

Introduction

Hello everyone!! I have the Letshuoer S08 – a fourth-generation planar magnetic IEM from the brand Letshuoer, with me. I previously reviewed a couple of the brand’s IEMs and was impressed with each. You can check out my detailed reviews for each of them from the link below:

Letshuoer DZ4

Letshuoer Cadenza 4

Letshuoer S15





The fourth-generation planar IEM is equipped with a custom dual-coil 13mm planar magnetic driver. Here is a brief technical jargon of the manufacturing process from the brand’s website:

• Letshuoer utilized a nanoscopic magnetron sputtering process, a high-end production method, on the planar driver’s diaphragm of S08, which sputters the copper material onto the substrate.
• The nanoscopic magnetron sputtering technology coats the diaphragm with a layer of voice coil in addition to conventional drivers’ single-layer voice coil circuits.
• They incorporated a PTR elastic film that surrounds the edge of the diaphragm’s voice coil, which makes the diaphragm perform with greater extensibility and stability.
• The LETSHUOER S08 incorporates the design language of the number "8" in its panel design, commensurate with the 8th Anniversary of the brand.
• The shell is a CNC precision-milled metallic build and is available in black and silver variants.
• The cables are made from 4 cores of 30-strands 0.05mm silver-plated copper.

Other Specifications

• Sensitivity – 105 dB
• Frequency Response – 20Hz – 40kHz
• Impedance – 26 ohms
• Shell material – CNC anodized aluminum

Cable, Tips, and the Carry Case

The cable is made from 4 cores of 30-strands 0.05mm silver-plated copper. The cable quality is pretty good considering the price point and has a very less aggressive ear hook design in comparison to the other Letshuoer planar IEMs, offering comfort for longer sessions. 2 termination plugs are included – 3.5mm and 4.4mm – A strategic move from the Letshuoer letting go of the 2.5mm termination that may help in bringing down the costs and I believe the benefits are passed onto the buyers – I didn’t come across a dongle DAC with a 2.5mm balanced port in the past 2 years. The twist-lock design helps keep the termination plug secure and in place and may be a first of its kind around the price point. It is a cool design.

The ear tips come in 2 variants of silicon – Vocal and balanced. Unfortunately, I did not use either of them. The balanced tips appear the same as that is included with the DZ4 which is good. I used the new Divinus wide bore tips for the entirety of my review and the synergy is excellent.

The carry case is a round resin-coated box like the other recent Letshuoer IEMs and comes in black. The storage space is okay for the tips slot, cable, IEMs, and the termination plugs, however, I wish a little more breathing space for everything to fit in with less congestion.








Finally…

At the time of this writing, I had spent around 150 hours in total listening time. The IEM sounds warm and neutral, and the tonality appears natural. I thank Betty from Letshuoer for arranging the review sample. I highly appreciate the gesture. So, here we go to the best of my intentions and abilities in listening and expressing my opinions on the product at hand:


Disclaimer

The review is based on extensive and critical listening and was not influenced by any written or video review.

The review is subject to unit variance and my personal listening preferences.

The review is subject to the gears I used for testing – DAC/ DAP/ Tips/ quality of the track

Finally, I have no affiliation with the supplier of the IEM.



Gears/ Audio used for testing

• S24 Ultra
• Tempotec V6 + Topping NX7
• Cayin RU7
• Onix Alpha XL1
• Spotify Premium

Driveability & Scalability

Catching the hype train, I purchased Onix Alpha XL1 from the hifigo and received them a week before. Since then, I have been listening most of my time using them. I had to postpone this review late by a week for this purpose. The hype is real guys, and I am blown away. It drives some of the hard-to-drive IEMs so well - of course not at the level of NX7 but the amplification section is excellent when paired with the S24 ultra. I wish the DAC had a line-out option.

The filters that make a difference in sound for me. I used both the NOS and fast filter for testing this IEM and I'm more impressed with the fast filter - The difference in the transient speeds is noticeable with a less boomy bass and a subtle articulation in the details section. However, for this review, I used the NOS filter the most. I am not impressed with the short type c cable of the Onix and replaced it with the Aful Snowy Night cable.

Coming back and forth between Cayin RU7 and Onix Alpha confirms me that the S08 is driven very well with the RU7. However, S08 scales well with the Alpha. Alpha sounds slightly more euphonic in the mid-bass region - can be described as warm neutral and RU7 is more neutral sounding – However, I don't say it is a colored sound with Onix. The SQ using the fast filter on the Onix comes closer to RU7 in terms of neutrality. The note weight appears much fuller with the Alpha. For this review writing except for the comparison, I only used Onix with NOS filter for the most part. In terms of scalability the headroom and loudness are better on the Onix at a given volume level compared to RU7. In the end, the synergy plays a vital role and influences a review. S08 synergy with Onix can be described as excellent with the choice of filters at our disposal.



The Sound Impressions

Bass

Sub-bass

Sub-bass digs very deep and shows its authority without roll-off. Gives the feeling of more air and rumble in some sub-bass-emphasized tracks. The quantity is bigger and the quality is decent. Being planar that benefits from its faster transient response, the sub-bass stays controlled and does not give an impression of being overly done. I don't say it has a very focused and tight approach here but stays well-controlled - as a result, has some impact on the Bass quality. The texture is very decent but not the best I have listened to.


Mid-bass

Mid-bass is thumpy, foot-tapping, and is authoritative. It has a euphonic quality to its bass that can sound a little boomy at times. I don't say it falls straight into the bass head territory as such, but bass lovers will be pleased by the quantity here. The transient response in the bass region is good, keeping the flow relatively clean. Sounds a little warmer with a slight bass bleed in a good way but stays in control. EDM and pop tracks shine well here with a good tonal quality. For some, the mid-bass may be overwhelming, especially the slight boomy sound at times, but I didn't mind much. The decays can be slightly controlled with the fast filter of the Onix Alpha DAC - A subtle but meaningful change. The slam and thump are excellent with a much-needed impact. Kick drums and bass guitars sound very authentic, and natural with some nice body and reverb.

Overall, listening to bass on S08 is a pleasurable experience.


Instrumentals

Instrumentals sound fuller with a blanket of warmth but appear neutral for the most part. A little coloration perhaps. Lower mids do not appear recessed and are full, with good weight and rounded texture. Never gives the impression of an overwhelming on-your-face kind of boxed-in sound and maintains a good balance between fullness and crispiness- a tad inclined towards the fuller sound contributing to its amazing musicality. The tone is not plagued with the planar timbre and appears very natural sounding to my ears. It is not as natural as a DD or Planar IEMs like S15, and P1 Max but natural nevertheless. The planar vibe is present without the planar timbre. Whereas S15 and P1 Max sound disguised as a DD.

Regarding the timbre, I covered it more in detail in my comparison section where I find it more relevant, and I don't wish to duplicate it here. Upper mids appear slightly toned down and recessed compared to lower mids allowing for a fatigue-free listen. The upper registers of the instruments such as violins, acoustic strings, and woodwinds do not sound harsh at all. Overall, the midrange sounds lush, natural, and soothing to listen to with a good-rounded timbre.


Vocals

Male vocals sound warmer, weighty, and textured. No hint of dryness or thinness and sounds full-bodied. Vocal-centric with the right placement and texture.

Female vocals are centered well, a little forward with good energy, and are not shouty. They have some great clarity, and texture and are very emotive.

Overall, these IEMs are vocal-centric and are excellent performers when it comes to vocal rendition.


Treble

Treble has a good energy and smoothness to it. Sounds open and lively without being subdued. The Divinus Velvet wide bore tips help with the details and more openness in the treble region. With regular Divinus tips, I find the treble over smoothened and that applies to details as well. Also, the fast filter of the Onix Alpha extracts even better details in combination with the tips. The combination of the DAC and tips makes this IEM a standout in my opinion - foot-tapping musical bass with a hint of sparkle up top.

However, I tested for the most part with the NOS filter and details are still good in the treble region with openness in the upper treble region. The cymbal strikes and splashes are still behind the brighter IEM like S12 Pro where the warmth blankets the brighter portions of the hits making it a smooth-sounding IEM in general concealing some details on the S08. The tuning intentions are understandable and Letshuoer did a good job here taming the treble with decent sparkle, openness, and extension that suits the treble-sensitive listeners. Not for the treble heads though.


Technicalities

The soundstage is adequate and decently wide with excellent headroom and depth. I am more impressed with the height and depth of this IEM than the width creating a spacious stage for the instrumentals to shine. I was less impressed with the imaging at first however, probably due to more burn-in or the change of tips, I was more impressed now. The positional accuracy is very decent with a full-bodied note weight and following the audible trail has improved as well. The tone and timbre are excellent for a planar IEM. There is no hint of a planar timbre and appears natural to my ears.

Layering is great considering the price point due to the faster dynamic transient response and is even better in a subtler way using the fast filter of the Onix DAC. Resolution and details are much better at a macro level than the micro detail retrieval. Overall, a very decent technical performer and Divinus wide bores are much recommended to make over into a more balanced and technical-sounding IEM.


Comparison

Letshuoer S08 vs Hidizs MP145

Both the S08 and MP145 with balanced nozzle are equipped with Divinus wide bore tips. I used Tempotec V6 + Topping NX7 with Spotify Premium for comparison. MP145 that I possess is the early review sample at the time of launch. There are some iterations of MP145 in the market already and so I intend to clarify. So, here we go:


Build and fit:

Both are comparable in terms of build with CNC anodized aluminum chassis, however, the MP145 is built like a tank and there is weight to it. S08 is very lightweight and easy on the ears in comparison. Fit-wise the S08 is one of the best fits I have ever tried. It just snugs into the ear and stays right there offering unparalleled comfort. It does not look like a regular IEM but has one of the best fits.

On the contrary, MP145 is big and can be bothersome for small ears. Fortunately, mine are not. I usually go to sleep at night with my IEMs on rotation but MP145 doesn't fit in that rotation as it gives me discomfort especially lying to the sides and the way the 2-pin connector is angled diagonally upwards, adds to that discomfort. In other use cases, there is no discomfort whatsoever except for the feeling of weight during some long listening sessions.

MP145 comes with 3 filters - Bass, balanced, and treble whereas S08 comes with 2 termination options - 3.5mm and 4.4mm. The accessories provided are decent for both the IEMs.


Driveability:

At a given volume level, the S08 sounds more audible than the MP145. S08 is a little easier to drive than the MP145 and they both scale well when amped. The difference in amping is a little less noticeable on the S08 in comparison.



Sound:

Sub-bass

They both are neck to neck here and differences if any are probably due to the fit - Incredibly snuggly fit with the S08. I perceive a slightly more quantity, air, rumble, and separation with the S08. Depth is slightly better on S08 as well. Listening to tracks like Lavender Haze - Taylor Swift, the thin sub-bass line and rumble that continuous throughout the track keeps me more hooked and engaging with the S08 as I perceive more audible sub-bass with better depth.

MP145 has a good sub-bass impact but the S08 tends to be more engaging without losing focus. I find the texture similar on both, however, is more audible on the S08. Overall, I slightly prefer the S08 for sub-bass as it is more engaging when the track calls for it.


Mid-bass

S08 sounds very slightly warmer compared to MP145 with a speedy transient response on both. As a result, the mid-bass sounds slightly more euphonic on the S08 - Brighter notes slightly intervene with the MP145 whereas S08 has them on check and sounds much smoother not impacting the bass. In tracks such as Beautiful Mistakes - Maroon 5, S08 may sound more boomy compared to MP145. Mid-bass quantity is slightly more on the S08. Slam and impact are slightly better on the S08. Kickdrums have a tad better authentic boomy reverb on the S08.

I slightly prefer S08 overall due to the more euphonic bass section.


Instrumentals

Mid-centric instrumentals sound great on both with very minor differences - The differences are hard to notice in some of my usual go-to tracks. So, keep in mind that the below differences are very subtle. The note weight is slightly better on the S08 adding a little euphonic nature to the sound with more roundedness compared to MP145. MP145 sounds a little analytical with a crispy and tight note weight in comparison, giving the impression of a larger stage. The lower mids appear very slightly recessed on the MP145 compared to the S08, in a good way. Planar timbre is more noticeable on the MP145 compared to the S08 - this adds to the more musical sound of the S08. Both create a spaciously large stage for the instrumentals to shine with a solid depth and height.

In general, I slightly prefer the S08 over the MP145 due to its musical nature with a slightly better note weight. In some busier tracks like "Looking Too Closely - Fink" especially towards the last quarter of the track, the instrumentals sound a little more micro-detailed on the MP145 due to the slightly better transient response and crispy nature of the sound. S08 does a great job here preserving the macro details with a more rounded sound, however, the MP145 is slightly better in extracting the micro details.

Strings and acoustics sound with good body, analytical, little crispier on the MP145. More rounded, and full-bodied on the S08. Piano hits give me the same impression. Both are great in their own way. Percussions in some busier complex tracks like "At The Speed Of Force" by Junkie XL sound a little more audible and open on the S08 compared to MP145 - Appears a little subdued on MP145. The upper registers of violins sound smoother and more detailed on the S08. On MP145, they sound a little brighter but within the natural limits below the sibilance - but may sound a little harsh to some. Woodwinds sound open and detailed on both - No sibilance from the upper registers. S08 sounds adequately detailed and laid back at the same time. Overall, I liked the timbre a little better on the S08, and appears more natural to my ears. MP145 has some planar timbre in comparison.

Listen to this brilliant interlude on the track "Vachindha Megham - A R Rahman" that starts at 2:50. It sounds soothing and more natural on S08 while it tends to go a little bright and can create fatigue on the MP145 if looped. This is one of the key differences between these two IEMs. I set the same volume level where S08 is louder here.


Vocals

Male Vocals

Male vocals sound a little thin and a tad less warm on the MP145 if you listen to a track like "Looking Too Closely - Fink". In comparison, S08 sounds a little warmer, fuller, and a little more emotive. The differences are subtle at best. Unless you compare them one after the other multiple times it is hard to distinguish here.
Vocal positioning appears to be the same but maybe a tad forward on the S08. I had a hard time distinguishing between the two. No sibilance on both.


Female Vocals

Female vocals sound with adequate energy and bite on both without being harsh and shouty. Clarity is slightly better on S08 and appears a tad forward. Sounds more emotive on S08 compared to MP145. There is not much difference otherwise.

For vocals alone, I slightly prefer the S08 because of the emotion which is better perceived. However, the vocals sound great on both sets.


Treble

The treble performance is decent and smooth on both the IEMs. Treble-sensitive friendly - The S08 has the upper hand here. The Divinus Velvet wide bores opened the upper extensions well on both the IEMs. It is overly smooth during my impressions using the Divinus regular tips for both the IEMs. Albeit a tad more open sounding on the S08. Micro detail retrieval in the treble notes is a tad better on the MP145. Both are very decent in overall treble performance which isn't a bad thing in the first place, and I consider them a tie here and complement each other.


Technicalities

Resolution is neck to neck but there is a slightly better micro detail retrieval in the mid and treble region with MP145. Otherwise, both are well resolving considering their respective price points.
Tone and timbre - I slightly prefer the S08 over the MP145 because of some planar timbre on the MP145 and a more musical and soothing tone on the S08.
Soundstage - stage width is adequately wide on both but a tad better on the MP145 due to the slightly thin note weight compared to S08 - thin only in comparison and does not appear otherwise. It gives a sense of a massive imaginary space littered with instruments in some tracks with MP145.
Height/ head stage is slightly better on the S08. Both have an excellent depth. Overall, I prefer both when it comes to staging.
The imaging is precise and accurate on both - I believe Divinus wide bores played a part here. My initial impression with S08 using Divinus regular tips wasn't that great. A slightly better precision with the MP145.
Dynamic transient response is slightly better on the MP145; Layering is excellent on both considering their price points. I didn't notice a big difference here.


Comparison Conclusion

S08 has a soothing musical sound with a solid bass slam (A little boomy at times) and a fuller note weight whereas MP145 has some planar timbre but with a tight crispy note weight that sounds a little more analytical and detailed in comparison. Vocals sound a little more expressive and emotive on the S08. I prefer both for what they offer. Technicalities are neck to neck, especially since using the Divinus wide bore tips. I tend to use them in different use cases depending on the mood but since I'm more inclined towards musicality, S08 would be my first pick, and it is cheaper too. I highly recommend you try the MP145 and see whichever suits you the best.



Review Closing thoughts

I dig the sound quality of this IEM. It has a full-bodied musical tone, and a balanced, smooth, soothing sound. The IEM emphasizes the bass, and the mid-range and sounds very natural. It is an exceedingly good performer with the vocals. Treble energy and the extensions are decent, keeping the flow interesting and engaging without sounding boring. It is not the most micro-detailed but is analytical nevertheless with a good note texture - Divinus wide bore tips play a good role here, especially with the details and imaging.

Technicalities are more than decent with some of the best spacious stages with a solid height, depth, and a decent width. Available at a short of 100 USD, this is one of the best or I could say the best budget planar I have heard, that is so musically pleasing to my ears. Lastly, pairing with Onix Alpha XL1, especially with the fast filter is a musical treat that facilitates more balance to the overall sound.

Intro
Letshouer is just one of those brands that have been resilient over the years. I came to know them, still called Shouer then, during the time the Tape was introduced in the market. As they've grown and released some hitters in the market such as the S12 and EJ07M, they came to be known as Letshuoer. I have owned the mentioned sets and I really appreciate the identity and effort they put onto their products, especially the catalog they include with their mid-to-high products and that signature puck case. To this day I still have my EJ07M 'Kinda Lava' custom and S12 Pro. On their 8th Anniversary, it's somewhat a delight to have the S08 debut fittingly. A departure of sorts to their energetic, engaging V-shape planar, this set slots in nicely in their current lineup especially coming in at its $100 pricepoint. Let's take a look on this seemingly planar wonder shall we.




Build and Package Inclusions
Packaged in a black box with a slip-cover featuring the namesake aesthetic, the 8 or infinity sign is featured prominently even with the shape of the IEMs themselves. Very classy in style both in its black or silver variants, solid metal grace the shells but are still lightweight which provides utmost comfort for wear. You also get a well-made non-tangly modular cable with a sturdy screw-on mechanism for the 4.4mm BAL and 3.5 SE terminations. Two sets (black and clear white) of eartips in 3 pairs of sizes classified in balanced and vocal variants are also included. Lastly, comes in a puck case which is made of matte plastic instead of the usual metal, still of premium quality but seem to cut on extra costs. All these gives you so much value for its asking price. No waifu, no fancy colors to catch your attention. Minimalist yet very well thought of product if you ask me.




Sound and Comparisons
Considering the flock of planar magnetic IEMs in recent years, the Letshuoer S08 is a refreshing welcome surprise. Featuring a warm, smooth and sweet sound that does not even remotely feel muddy, the overall tonality of the S08 keeps my ears glued to it even after hours without noticing. No harshness and sharp peaks whatsoever but still provides a natural glide to the treble that fits its overall target tonality. There is that sense of balance between being pleasant and engaging, not feeling boring across multiple music genres. Transitioning from a velvety lullaby or a toe-tapping jazz feel effortless and never awkard even going towards a pop playlist. Bass is adequate and just right though it does feel a bit soft and less defined for those focusing on the low end. Mids are lush and velvety while treble is smooth though could use just tad bit of sparkle for that extra engagement and air. Soundstage is wide though resolution does seem average, considering that this is a planar set. The 4th generation dual voice coil 13mm planae magnetic driver used in the S08 is the most unplanar characteristic in its timbre that I have ever heard. It will favor those who feel that planar timbre is metallic or unnatural though sacrificing a bit of detail. I have yet to hear the NICEHCK F1 Pro while the Kefine Klanar is a bit pricier, just makes this hundred buck planar one of the better recommendations. If you still find the Simgot EA500LM bright, then the S08 is a really good complement or alternative to Harman-target sets or even the current Simgot budget lineup.



Conclusion
It's just really hard to find flaws in the S08 especially once you put it in your ears and get lost in the music. A non-fatiguing planar magnetic set that makes you consider the holistic package of having a premium minimalist build, generous accessories and a sweet smooth sound - this anniversary product by Letshuoer just makes you reconsider where price-to-performance ratio could really go. It's that good and one would just nitpick and find a little bit boost to a certain aspect to reach an almost-perfect level at the $100 bracket. Though I find it hard to fault putting down a hundred bucks as this is an easy recommendation. It would be difficult to find an audience that would not be satisfied by the S08.

Sidenotes:
IEM set has been listened via the Sony ZX-707 and Onix Alpha separately using the stock balanced eartips over the majority course of multiple genres across FLACs (16bit&24bit) and streaming (Tidal). The Letshuoer S08 is available through multiple outlets and dealers for $99.99.

Disclaimer:

The new generation of planar drivers has arrived! The LETSHUOER S08 fully represents the new generation. As you will see from the photos, its dimensions are extremely compact. Previous planars have always had somewhat challenging dimensions, especially for those who have particularly small ears.

After the LETSHOUER S12 Pro and S15, the thing I notice with enthusiasm is the return of the metal shell. The 3D printing is beautiful, but the CNC-machined metal shell is on a completely different level.

However, the review will still be 100% honest and, in no way, biased.

I’m not an audiophile; I’m just a guy that likes to test out different IEMs and DACs and spends a lot of time listening to music.

So I’m not going to use super-technical words to review it, but I will do my best to describe it.

Tech Specs:​

• Chassis Material: CNC anodized aluminum
• Sensitivity: 105dB
• Frequency Response: 20Hz ~ 40kHz
• Impedance: 26Ω
• Cable: 4 x 30 strands x 0.05 mm silver-plated copper
• Driver: Fourth generation 13mm planar magnetic driver

Packaging:​

The packaging of the Letshuoer S08 is simpler than the last few we’ve seen from this brand. Honestly, it remains a very respectable and well-looked-up package. Opening it, we immediately see the S08 and its case, which contains the accessories:

• Modular cable from which they removed the 2.5mm balanced one (honestly correct choice)
• 2 sets of different tips
• Manual and QC

The tips included are those that we have already seen in even more expensive Letshuoer products, which are excellent for starting to discover the IEM, but if you have the chance, try as many as you can. The surprise modular cable is perhaps one of the best we’ve seen so far. I’ve never been a fan of angled connectors, and I really like these straight ones. The quality of the cable is excellent.

Design/Build quality:​

The Letshuoer S08 has really excellent dimensions; in terms of shapes, it vaguely reminds me of the Moondrop Chu or the Tanchjim 4U, but the design is more or less the same. The shape makes it one of the most compact planar IEMs on the market today.


Currently, I don’t think there are other IEMs that can boast a 13mm planar driver in such a compact shell. We’re finally back to the CNC machined metal shell, which, in my opinion, has a completely different appeal to resin and 3D printing. To the touch, it has a completely different effect, it seems like a much more expensive product than it is.

The design is very simple; the entire shell is the result of CNC machining, and the faceplates are also very simple. On the shell, you can see two holes for ventilation, and the nozzle has completely normal dimensions. I greatly appreciate this choice. Anyone who didn’t buy the Hidizs MP145 due to the size now has no excuses.


As you can see from the macro photo gallery of the accessories, the quality is very good, and despite the cost, the cable is definitely excellent.

Comfort/Fit:​

As you may have guessed, in terms of comfort, we are at high levels; if you find them uncomfortable in any way, you just have to look for the eartip suitable for your ear. The weight is low and does not cause fatigue or pressure points. The included cable is flexible enough and not too thick.


Surprisingly, I have to admit that they are not the most comfortable, despite the shape of the shell being good. I honestly can’t understand if it could be a problem with the angle of the nozzle or the earhook of the cable. You have to play the eartips until you reach a good compromise.

Initial sound impression:​

Letshuoer S08
I believe that the Letshuoer S08 can finally be defined as an alternative to the Hidizs Mp145. The sound signature is not exactly the same, but it follows a similar philosophy. The bass, compared to the Letshuoer S12 Pro, is finally of a quantity that better suits the quality of a DD. I found the S12 Pro a little excessively bright, often quite extreme levels of brightness were reached. The Letshuoer S08 still has some reminiscences of the S12 but is much more tolerable. Especially considering the high quantity of bass, the quantity of treble allows for maintaining a high definition. Right from the start, the sound was excellent, and for the price at which it is offered, it is truly valid.

Equipment used for testing above.​

Device:

• iMac
• Redmi Note 7 Snapdragon
• Poco M4 Pro Mediatek

Software:

• Amazon music UHD 24bit 96kHz

DAC:

• Moondrop Dawn Pro
• Fosi SK02 (most used)
• Fiio KA11
• Fiio KA17
• Fosi DS2 (great too)
• Simgot Dew4x
• EPZ TP20 Pro
• Hidizs S9 Pro Plus
• EPZ TP50
• Creative SoundBlaster X5

Final sound impression:​

I had them do a few hours of high-volume burn-in before putting them back in my ears. I kept the original cable, but since I have the Nebula here in my hands, I will try to change the cable later in the review. As for the tips included in the package, I haven’t used them much, but you absolutely have to find the most comfortable ones that seal.


The Letshuoer S08 are probably the least technical planars that focus more on the fun side; their bass appears to be elevated by the fact that the trebles are very smoothed, but fortunately, tonality is unaffected, resulting in a neutral result.

The tuning, as I told you, is V-shaped, the sound has good energy, and the mids are not particularly recessed but participate well in the mix. The sound is the furthest thing I’ve ever heard from a planar driver; there are more similarities to a good-quality dynamic driver. Drawing conclusions, perhaps the real opponents of this model in particular are the Kefine Klanar. Overall build quality is very similar, with better cable on Letshuoer and a very similar price. Shape-wise, the Klanar fit better in my ears. In my opinion, despite following the same tuning, the Klanar have decidedly less lazy trebles. Result? The tuning seems brighter, and the level of detail and sharpness is higher. The soundstage is also more developed, but that could also be due to the slightly wider shell. However, I must tell you that the tone is better on the S08.

Tips Rolling?​

Stock tips may not be the best option, but you should still try them before purchasing new ones. Everyone’s ear shape is different, so they might fit you. As a first test, I tried the Whizzer SS20, which yielded a decent but not perfect result.
The Divinus Velvet, on the other hand, proves to be very versatile and provides excellent comfort, but in my case, I was still not completely satisfied; I seemed to lose some bass and gain in highs, perceiving slightly annoying peaks on some tracks.
Fortunately, the brand new EPZ tips in liquid silicone had just arrived, and contrary to expectations, they were excellent in size S. Soft and slightly sticky, ensuring stability in all situations. There are no sound leaks, and all low frequencies have been fully recovered.

Bass​

In terms of bass, I think it is the planar IEM that, at the moment, is closest to the result that a DD can give you. This makes me extremely happy, as the artificial timbre of the planar is inaudible, but the rumble of the bass is very extensive. The only slightly sore point is regarding the texture, which is not of a very high level. Let’s say that some DDs on the bass still have the upper hand. But I can assure you that for those who don’t necessarily find the defect, they are excellent. If somehow the bass pressure is too much for your ears, you can use the Divinus Velvet, which somehow manages to attenuate the pressure inside the ear canal.

Mids​

Undoubtedly medium recesses compared to the rest, but which still stand out more than correctly. To tell the truth, I find them perfect as far as I’m concerned, quite neutral timbre (on some tracks, I notice some artificial hints), and both male and female voices are coherent with a good depth. Musical instruments are also good. We can define them as mids with a decidedly warm tone that preserves their neutrality without distorting the timbre of the sounds. A soft and smooth representation that I personally am appreciating a lot.

Treble​

Regarding the treble, we are used to planar drivers doing very well but I think Letshuoer listened to the previous feedback and decided to release an extremely smooth version. The highs are there, and the details are slightly sacrificed for tuning with truly minimal fatigue. Surely the driver could have released more air but they decided to limit its extension. It’s not a bad choice because many of us don’t like these frequencies. In terms of possible buyers, this is certainly a more mass-appealing tuning. The S12 Pro certainly had the presence of a completely different class. Sacrifice involves fewer macro and micro details.

Soundstage and Imaging:​

Here, I have to tell you that the performances are subdued compared to planar drivers; the image is good but not at the level of other planar IEMs (slightly lower), while the soundstage is not as enveloping as I would have expected. The Hidizs Mp145 has a very deep sound but these definitely stop short. We are outside the vehicle and quite focused in front of us. Having said that, the overall effect is still good, especially considering the price.


360° Overview reel

Comparison:​

vs Letshuoer S12 Pro


Many still appreciate them and at the current price, who can blame them? Most people haven’t heard too much high-pitched sound like me, but actually, at human volumes, there are no problems. Obviously, I prefer the tuning of the new S15 and above all, the soundstage is significantly better. Their design, although very minimal, I liked more.

vs Letshuoer S15


The smoothest and most technical planar IEM is in my possession for the moment. In terms of tone, it has things in common with the S08, but the price is definitely much higher. The complexity of the internal cavity is on a completely different level, and it integrates the passive filter and other precautions that the S08 does not use. It’s difficult to make a comparison given the price, but honestly (in my opinion), the S08 for less than 100 USD don’t look out of place at all. They are two IEMs with completely different technical performances, but they are both perfectly enjoyable.

vs Hidizs MP145


Maybe it’s because the Hidizs Mp145 fits me like a glove, and therefore the external insulation becomes almost absolute, but it remains one of my favorites (first version). Now they have changed something in it and unfortunately, there have been some variations. Although I hear many are still happy with it, I cannot tell you to buy them with your eyes closed. The original version has a sound that completely envelops you—warm and even smoother than this S08.

vs Kefine Klanar


An S08 with more brilliance and detail, but less smoothness. Unquestionably better soundstage. The tone of the S08 is ultimately more accurate, so in my opinion, there is no true winner between the two. In terms of comfort, however, the Klanar wins by a few points.

Conclusion:​

Letshuoer got this new model right. The Letshuoer S08, despite its extremely compact size, contains a 13mm planar, which, considering the aluminum shell, is a truly exaggeratedly large size. It is true that comfort is not the best, but with the right tips, you will undoubtedly be able to find the most comfortable position for you. They opted for safe and fatigue-free tuning, even over long listening sessions. I am extremely happy that the CNC machined shells are back. I would be very happy to know the price difference compared to the shells printed by Heygears. For a price under 100 USD, you take home a beautiful IEM complete with quality accessories, and if you are looking for a planar with a neutral-warm but v-shaped tone, this Letshuoer S08 is for you.

Where to buy and more information? (no affiliated link)​

Letshuoer S08 Fourth Generation in Ear Monitor Earphone, Dual-coil Custom13mm Planar Magnetic Driver HiFi Wired in Ear Earbuds, Planar IEM with Detachable 2pins Silver-plated Copper Cable for Audiophiles Musicians Studio

Introduction

It's the brand's eighth anniversary and Letshuoer wants to celebrate by bringing new models to the market. The first of these is the Letshuoer S08, an IEMS that features a custom 13mm fourth-generation dual-coil planar magnetic driver. Several unique processes are used to manufacture the driver: sputtering of nanoscopic magnetrons to place the voice coil on the diaphragm. The S08 incorporates an elastic PTR surround film on the edge of the diaphragm. This significantly improves bass depth and provides a much tighter bass presentation and increases the width and depth of the soundstage. The faceplate integrates the "8" design to celebrate LETSHUOER's 8th anniversary. The S08 is equipped with 3.5mm and 4.4mm modular connectors. Its housing is made of metal and has been precision CNC milled. The twist-lock design ensures durability and reliability of the plugs. The cables are manufactured with 4 cores of 30 strands of 0.05mm silver-plated copper. The S08s are available in two versions: black and silver. The price of this promising new product is $99. Let's see what the new Letshuoer S08s are capable of.



Specifications

• Driver Type: 13mm fourth generation magnetic planar.
• Frequency Response: 20Hz-40kHz.
• Sensitivity: 105dB.
• Impedance: 26Ω.
• Capsule material: Anodised aluminium.
• Jack Connector: Detachable modular with 3.5mm SE and 4.4mm BAL connectors.
• Capsule Connection Type: 2Pin 0.78mm.
• Cable: 4 strands of 30 wires of 0.05mm silver plated copper.

Packaging

The Letshuoer S08 comes in a black box dominated by a large 8 on the main face, formed by concentric silver dashed lines. In the centre of the upper hole of the 8 you can see the brand's logo and slogan. In the lower hole is the name of the model. The dimensions of the case are 156x106x51mm. On the back side are the specifications in several languages, the brand's contact details and the representatives in Europe. You can also see all the logos of the certifications it complies with. After removing the outer cardboard you can see a completely black box with the logo and slogan inscribed in the centre of the box. Underneath the lid are several cards, while the IEMS are inside a dense layer of black foam. In it, underneath, there is also the classic black, circular screw-on box, typical of Letshuoer. Inside are the tips and the cable. The complete contents are as follows:

• The two capsules Letshuoer S08.
• Warranty card.
• Product certificate card.
• Instruction manual.
• Black circular box with screw cap.
• Blister with 5 pairs of tips. The other two come in capsules.
• Three pairs of white silicone tips with black core, sizes SxMxL (Balanced eartips).
• Three pairs of black silicone tips, sizes SxMxL (Vocal eartips).
• Four-strand modular cable with two 3.5mm SE and 4.4mm BAL terminations.

It's the brand's classic packaging, which includes a large modular cable with two terminations, two sets of tips and the distinctive black, rubbery-looking circular box with a screw-on lid. Very nice.



Construction and Design

The surprising thing about Letshouer is the size of the capsules of its planar IEMS. This time it has reduced the size of the driver and, incidentally, also the size of the capsule. This time, the shape of the capsules is an oval with long flat faces. It is more like a rectangle with rounded short sides. My model is made of black aluminium, but it is also available in grey. The outer face has a sinuous S which is nothing more than the 8 of its anniversary. The capsule on the left is engraved with the brand name and on the right with the initials. The entire surface has a matt micro-texture. The thickness is midrange and rather flat, with the exception of a right-angled flap, where the 2Pin 0.78mm connection is embedded. Nearby is a hole, while on the other side of the corner is the model name and the lettering marking the channel, all in white ink. The inner side has a rather slanted shape towards the mouthpieces. The thickness of the capsules on this side is greater. The nozzles are part of the same face and are fully integrated. They have two diameters, the lower one is 5.4mm, while the crown is 6mm. Both are protected by a dense metal grille. There is another hole at the foot of the nozzles.
The cable is composed of four shiny, silver-plated copper strands wound together. The plug is modular, screw-on and based on a two-part cylindrical design, where the connector part is black, with the marking and a white position triangle. Each connector has a translucent plastic protector. It has a classic velcro with the brand name to collect the cable. The splitter is a small, simple black cylinder. The pin is a very small piece of black plastic, whose holes are very tight. Thus, the fitting process is very good and durable. The cables have over-ear guides. The sleeve of the 2Pin 0.78mm connectors is a half-angled piece of black plastic. The plate containing the two gold-plated connectors is the colour of the channel, red for the right one, blue for the left one. On each of them is the channel letter embossed.
Little to comment, great design of the capsules, very elegant and sober, with a small size and a very ergonomic shape. The cable, again very good, modular, very practical and flexible. Very good.



Adjustment and Ergonomics

Letshuoer knows how to make good capsule designs, but these S08s are special. With the 8-shape design on the outer face, the perfect oval shape is small, and together with the flange containing the connection, they form a distinctive whole. The inner face has a steep slope towards the nozzles, which facilitates insertion, which can vary from shallow to slightly deeper. The oval shape fits perfectly in my pinna, there is no rotation and the flap from where the connection starts has an inclination which, together with that of the cable, makes it pass over the ears in a somewhat fair way. This, perhaps, is the most critical point, perhaps for some people it could be annoying, as the set is somewhat short and does not go over the ear with sufficient ease. For the rest, the ergonomics are very good, with this small size, a low weight, although it is metallic. It is worth noting that the base of the mouthpiece and its inclination are also responsible for a great fit and good isolation.



Sound

Profile

The profile of the Letshuoer S08 is balanced in the upper midrange and upper treble. In addition, it is slightly boosted in the bass. Its entire frequency response moves within 9 dB between 20Hz and 10kHz, which gives a clear indication that it is a balanced profile, with no areas where there is a high energy level. It is a smooth, somewhat dark profile, nuanced in the high end, musical and pleasant.



Bass

The bass of the Letshuoer S08s is dense, full-bodied, physical and dark. They generate a full bandwidth and base their power between the sub-bass and mid-bass limits, which is a sign of an extended bass. Moving immediately to the very low-frequency pure tone test, one does not miss the behaviour of a good dynamic driver, after seeing the results of the S08s. The low end performance has only one subtle minus point: perhaps it has a bit of colour rather than a sensory aspect. But the tone is very pure, with hardly any wave character, just a dark, powerful and sensory sound. It's certainly even purer than many dynamic drivers in this price range, which shows that planars are still making progress, even if this is a smaller, cheaper planar. Timbre and the sense of punch, energy, volume and colour are excellent. Playability is enviable and the behaviour is precise and very pleasant. The base hits are elastic, slightly rubbery, rounded, perhaps not the driest, but they feel tight. That elastic feel gives it a greater sense of occupied space, a certain level of presence in the environment and a slightly longer fade. But the level of darkness, the slightly more pronounced texture and that sense of power makes for a highly appealing and enjoyable aftertaste for bass-lovers like me.
To be sure, the energy level of the entire bass ensemble may be too much for some, as their presence is noticeable in the overall sound, almost more so than any other band.
In the heavy, dirty, complex and unfiltered bass reproduction test, the S08s show no doubt, there is no hint of suffering. Bass is always under control, without distortion even at high volumes. It follows complex bass lines smoothly and is able to combine bass drums with them without losing control. This is how it is very adept at layering, layering bass lines and hitting powerful bases at the same time. All while demonstrating precision, level resolution, detail, a great deal of power, volume and that level of rubbery darkness that gives it a more visible and appealing texture.



Mids

As I have been explaining in my last reviews there is a clear alternation in the latest IEMS I am testing. There is the excited upper midrange and upper treble profile, which seeks clarity and transparency. And then there is that more relaxed, musical profile, with clearly boosted bass. The S08s are in that second place. The advantage that this gives to the first half of the mids is largely advantageous to my personal tastes. The first mids have the warmth of the bass, also their volume. But their timbre is never muddy despite their level of presence or darkness. There is a slightly black exuberance, which has enough body and physicality to make the music of this range bigger and more present, but without being predominant, knowing how to keep its distance and stay in its space. In this way, the male voices feel vibrant, powerful, full, dense, fleshy and full, but with a certain slightly dark and subtly nuanced tone. Here, they are more of a protagonist, with plenty of groundedness, pulp and mass. The rest of the instrumentation in this part is equally full, with a timbre that is not bright, staying on the natural dark side.
Warmer compositions will be boosted and appear even more dense and punchy, bringing to mind the wall-of-sound feel of the brand's own S12s.
The upper midrange rises quickly and then enters a decreasing plateau towards the treble. This manages to enliven the range towards the light, reaching a remarkable level of transparency and clarity so necessary for a profile like this. Although, admittedly, the female voices lack a certain sparkle to make them more vivid and splashy, they remain not quite as close and less excited than usual. They are more grounded and feel thicker. In this respect, sibilances are close to zero and all brightness is under control. Those who enjoy thinner, leaner and brighter upper midranges will have to look elsewhere. The S08s are full of smoothness and are quite relaxed in their higher notes. On the other hand, the midrange becomes larger, taking up a great deal of volume, demonstrating vast power as well as a remarkable overall presence.



Treble

The treble of the Letshuoer S08s is distinctly smooth, controlled and nuanced. They feel relatively thick, without too much energy or shimmer. Nobody is looking for crisp treble. This is certainly a fairly relaxed range, just look at the frequency response in this area. Even the amount of air also feels limited. The treble representation is quite homogeneous, but in a rather soft, even mild and muffled version. This affects the rest of the sound, enhancing the feeling of darkness that persists during many phases. On the other hand, it is easy to get used to this kind of relaxed and pleasant sound, but one can also miss more treble or more energy in this area, to complete the timbre of the music in a more natural and reliable way.



Soundstage, Separation

The Letshuoer S08s have quite a large soundstage for their small size. It must be said that the marriage of such a dense presence, with the level of clarity, transparency and separation offered by this relatively dark planar driver, is astonishing. The soundstage is wide, deep, with very good laterality and remarkable headroom. It feels spacious and expansive, though not volatile or gaseous. It spreads out, but is not fully immersive, but a more frontal feel prevails, somewhat beyond the semi-sphere, very good for its price.
I insist that for its soft and relaxed profile, it feels a very good level of transparency and separation, something that contrasts with that wall-of-sound sensation. Also noteworthy is the level of resolution, accuracy and detail. However, a little more sparkle and brightness is needed to bring out more of the micro nuances. I also miss some more air in the background and a better differentiation of layers, the detail can be somewhat diluted in them, without feeling fully represented.



Comparisons

Kiwi Ears Quartet 11

Having discovered the price of the Letshuoer S08s at $99, it's clear that the competition has a tough time against them. I consider the Kiwi Ears Quartet 11 to be a good contender with a similar price ($109) and the versatility of offering 4 different tunings thanks to their two switches. Made of medical grade resin, with a classic semi-custom shape and superior thickness, the Quartet is slightly larger, but it's that thickness that's really superior, offering a bulkier capsule. Both ergonomics are good, but the smaller size and shape of the S08s are ahead. In terms of packaging and accessories, the Quartet comes with a good set of three complete sets of tips, a good zippered case, but a cable that pales in comparison to the quality of the S08's modular cable. Another point in Letshuoer's favour.
As expected, the S08s are more difficult to move than the Quartet and a balanced power supply is appreciated. In terms of profile, the switches on the Quartet generate overall differences between the two models. But there is a combination, with both switches in the ON position (11) that has a profile quite similar to the S08s. I am going to use this position as a basis for comparison with the S08. But first, I should comment that the Quartet has a 2DD 10mm + 2BA configuration and we all know that the S08s are 13mm planars.
Despite the similar frequency responses in most of them, both models have a different sound. I find the sound of the S08s a bit more muffled and dry. The Quartets have a bit more light and sparkle. The Letshuoer's bass is a bit more elastic, rubbery, but also darker and more powerful, with a more punchy kick. On the other hand, the Quartet's bass is a little tighter, controlled, but also simpler, at position 11. In the very low frequency pure tone test, the S08's show their power and better execution: they sound more in line with what I think is the reality of a sub-bass. They are darker, less coloured and more powerful.
Both IEMS have a first half of the midrange that is within that physical density that I like. But the Quartets are clearer, crisper and more transparent, something that gives them a slightly more natural timbre and not as muffled as the S08s do. The S08s are denser, offering that wall-of-sound feel. Although the male voices don't feel as close and explicit as on the Quartets. The upper midranges of the Quartets are cleaner, something that differentiates them from the more diffuse feel of the S08s. In this sense, you feel that more classic sound of the BA drivers, which is sharper, splashier and thinner, giving a sense of more transparency and light, but is also leaner. I still like the timbre of the Quartet's upper mids better.
In the treble it is a duel of muted high notes in both cases. Little energy in both cases and, perhaps, there is a little better performance in the Quartet's treble, sounding thinner and a little more luminous.
Neither is too good at recreating micro details and each of them does it in their own way. In the end, they can manage to decipher the same amount, but exposed in a different way. And that is something that is a different effort of approach for each of them. I think the Quartet have a little more evidence in this respect.
Where there is no doubt is in the scene. The S08s have a soundstage that is wider and more immersive. Where the Quartets are more frontal, the S08s surprise with a much more powerful lateral feel. The sound of the S08s is bigger and more surrounding, while the Quartets have a sound that is more front-focused and less immersive.



Conclusion

Planars and their controversial treble, the return to the dark side could be the motif of the Letshuoer S08. However, this model is the first one to celebrate the brand's eighth anniversary. 8, a different number to celebrate, usually multiples of 5, but Letshuoer has decided to celebrate the eighth anniversary with a series of new models. And the S08s have opened fire with a new fourth-generation custom 13mm dual-coil planar driver. A smaller driver for a reduced 8-shaped capsule that is extremely comfortable. The improvements are felt in the bass, dark, deep and with great performance. The second improvement is in the immersive and surrounding soundstage, with surprising laterality. The third power is not so striking because it is already something that is inherited from the rest of the house planars and it is that feeling of a wall of sound that settles from the bass to the midrange. But on this occasion, that wall of sound feeling extends into the upper midrange, as darkness wins out over light, making the highs a lesser represented fringe. In the end, this upper-end smoothness is also the downside of often fantastic planars for under $100, though there are other times when I'd prefer them to be more expressive. And we amateurs never know what we want. But the new Letshuoer S08s are there to bring out that dark side.



Sources Used During the Analysis

• EPZ TP50.
• Tempotec V3.
• Burson Audio Playmate 2.
• Aune X8 XVIII Magic DAC + EarMen ST-Amp.
• Aune M1p.

Purchase Link



You can read the full review in Spanish here

★ Introduction :-

Letshouer Audio is a company specialized in audio equipment. Especially their previous S12 pro & S15 series which basically extended their planar IEM journey as it generated a lot of hype around the Chifi world. Their pricing goal is to maintain with price to performance ratio, So that customers can easily be satisfied with their budget offering. They have been able to maintain this consistency for a long time and recently they unveiled their new planar 'S' series called the S08. The most interesting thing this time is the number "08" as they've entered the 8th anniversary of their journey and on that occasion they have recently released the S08 in the market. I've been using this IEM regularly for a few week Now, I'll try to highlight all aspects of this IEM in my review. So that it is convenient for you to understand how equitable it is for this price category.

★ Disclaimer :-

This review unit was sent to me from @LetShuoer Audio . I had no financial agreement with them to promote their product. So, the entire opinion of this review is completely my personal.

★ Box Content at a Glance :-

The unboxing experience of S08 was surprisingly good. All necessary accessories can be found out of the box, which have not made any compromise in terms of quality. Letshouer has no room to complain in this regard

1. A pair of S08 IEM.
2.Two types of different sizes eartips.
3.4-core silver plated copper cable with included modular jack system.(3.5mm & 4.4mm both)
4.A Premium hardshell carrying case.
5.Some extra paperworks.

The accessories that Letshouer have provided with this 100$ IEM are really impressive. They have provided a very nice braided silver plated copper cable as stock cable which has the facility of modular jack system i.e. both single end and bal termination facilities are available. Its hard carrying case can also be called very practical. Which has enough space inside so that the IEM can be stored easily and as a result the IEM will be protected. Moreover, it comes with two types of eartips such as balanced and vocal tips which seem quite usable. But the most interesting factor is its vocal tips as they look and feel like a copy of the cp500 in terms of comfort lol.


★ Specifications :-

~ Driver :- Fourth generation 13mm planar magnetic driver
~ Impedance :- 26Ω
~ Sensitivity :- 105dB
~ Frequency response :- 20Hz ~ 40kHz
~ Connector :- 2pin 0.78 mm
~ Cable type :- 4 core silver plated copper with modular jack system.


★ Design, Build & Comfort :-

The S08 IEM does not feature the sleek and ergonomic design of previous generation planars. A slight difference can be noticed in the upper part of its shell as the branding of Letshouer is engraved on the left side and a wide ditch-like pattern is given just below it. Similarly, a similar pattern can be seen along with a logo on the right side. This set does not look premium in any way despite the use of aluminum alloy as its shell construction. But its build construction is rock solid without any doubt. So there is no chance to raise any question about durability. On the other hand, even after the metal build, this set was fairly light weight, so it can be worn in the ears for a long time, at the same time fit and isolation are fairly good. But it cannot be called super comfortable. Because if used for a long time it will cause pain in the ear but this problem will be more for those who have an average ear canal. Moreover, I have noticed that using aftermarket eartips in this IEM makes the fit, isolation & overall sound a little improved . I want to talk about Spinfit W1 here. I got the best result from this set using w1 eartips. So if someone wants to experiment with different eartips, then i recommended to use w1.

★ Sound Aspect :-

S08 basically warm v shape sounding IEM. Where the bass emphasis is more than the treble. Because treble is very smooth but not bothering. Besides, the mids section is positioned a bit towards the back, so it seems to be a laid-back sounding. Where the excess of musicality is more noticeable than technicalities.This is where the S08 differs from its predecessor planar sets. Immersive staging and precise imaging are not very impressive like the previous generations, but one of the good aspects of this S08 is that there is no planar glare. As a budget planar, letshouer has managed to keep the tonality & timbre fairly accurate.

Credit :- @ToneDeafMonk

In the case of previous s12, s12 pro, the biggest headache of many was overly sharp or aggressive treble response and at the same time the presence of significant amount of planar timbre due to which the tonality was full of adulteration. But this time they have been able to show a different scenery by releasing their S08 even though the technicalities have to be sacrificed for that reason. However, the warmish sound signature of this set is able to increase the excitement of listening to many people if one is not highly of any treble head.

★ Gear Used :-

1. @Questyle Audio Engineering CMA Fifteen
2. Cayin Ru7 (Se & Bal both)
3. Questyle m15 (Se & Bal both)
4. Quloos Mc01 (SE & Bal both)
5. Epz Tp50 (Se & Bal both)
6.Fosi Audio Ds2 ~ 2024 (Se & Bal both)

Letshouer S08 is a set of 26Ω impedance whose sensitivity level is 105dB. This set cannot be called easy to drive by any means. It cannot be driven without a good amount of powerful sources . But in that case, pairing with a neutral to bright sounding source will be quite wise. So a good quality dac amp or portable player is used, then it gets scaled up with the source and becomes better sounding. However, the best pairing I've found with CMA Fifteen. Better stage depth, Somewhat improved imaging even got descent details & slight mico details even tonality & timbre was more improved.

Now, I will discuss the sound in detail, I will start with the Low end of this set, i.e. the bass....


★ The Bass :-

In the bass section, this set has shown solid performance, especially the sub bass region is its strongest place. The extension of the sub bass was very solid because it has the ability to hit very deeply which creates a rumbly environment and at the same time its control level was remarkably good. But the mid bass section is a bit disappointing. There was a lack of impact & texture. This means that bass notes can only be heard but not felt with a sense of texture and resolution, Moreover, the bass notes seem to be thinner. In many cases it becomes difficult for this set to render fast bass lines correctly. Hence, it is naturally difficult to maintain tightness and agility without any bleed issue. That's why the tendency to have a slight mixup with the mids can be noticed. Although it is at a minimal level but it does not overly make the listening experience bothering. This characteristic is not so very ideal for genres like rock and metal where bass guitar and drum demand precise articulation.


★ The Mids :-

Mids region has a lot of engagement & fun factor. Upper mids are clean, forward & smooth manner with a hint of warmish present. On the other hand, there is a slight bleed of bass with lower mids, due to which a warmth environment will be create there, but the lower mids was really recessed, But it will be less noticeable to many but there it is . That's why vocals and instruments are presented with a good timbre, which listeners to hear mediocre nuances and textures in recordings. As a result of which adds body to vocals and instruments, providing a lush & musical presence without sounding overly clinical or thin. That's why the body of male & female vocal seems to be a bit more fuller even vibrant. This IEM's midrange performance adapts to a variety of genres fairly well. It represents vocals and instruments with authenticity and musicality, which making them versatile.


★ The Treble :-

The treble part of this set was much more relaxed. However, details are lacking because they have rolled-off to reduce the energy of its upper treble. Treble extension was mediocre level, making it difficult to reach the upper registers. Because of this it fails to contribute to an airy and spacious soundstage, which is unable to enhance the overall sense of openness and realism in the whole sound frequencies. The lower treble is more smooth and the texture is comparatively less. But its treble is in a much safer position than their previous planar IEMs. Many may find its treble a little dull, especially those who are treble heads. So vocals, cymbals and subtle nuances of instruments like violin, piano or guitar are not conducive to hearing properly. As a result, maximum instruments are hindered from being clearly audible. Treble notes are fairly controlled & very smooth, which gives a pleasant listening experience even during long listening sessions. Each instrument and vocal line takes a bit of effort to clearly define which creates a cohesive yet moderate detailed music presentation.



★ Technicalities :-

S08 is technically not that strong. Which can be a bit disappointing as it is planar. Sound stage width was average on the other hand stage depth was better. Imaging was good but nothing impressive. I got mediocre results from there. I was hoping this set would provide holographic imaging like its predecessors unfortunately it didn't. However, letshouer has released this set as fun & engaging focused due to which the excess of staging, imaging even micro detail has been reduced, making it more suitable for those who want to enjoy the listening music more. The most interesting thing about this set was tonality & timbre because I didn't get any major problems related to timbre from a planar set of such a budget. Letshouer has done a good job in this regard, Which really surprised me.

Overall rating out of 5 is what I would give

Bass : 4/5
Mids : 4/5
Treble : 3.8/5
Technicalities : 3.5/5
Build & Aesthetics : 4/5


★ Comparison :-

~Letshouer S08 Vs Tinhifi P1 Maxii~

P1 max ii basically a bit bright-ish tuned set. Where there is presence of sub bass & mid bass but the bass note definition is a bit distorted but the speed was good which contains the characteristic of typical planar.In the case of S08, the bass section is its strong point, especially the sub bass is very prominent compared to the mid bass, due to which deep & rumbly bass is available, but the impact of the mid bass section is comparatively less due to which there is less presence of texture. So overall the S08 will undoubtedly outperform the P1 max ii in terms of both sub-bass and mid-bass.
Regarding the mids, I can actually say that the upper mids of the P1 max ii are a little brighter and the lower mids are recessed, due to which the sound of male & female vocals is very unpleasant even track wise sibilant issue was found.
On the other hand, S08 will be in a better position in terms of midrange performance, because its warm & lush-ier character has given a special fullness to the total mids section due to which the body of male & female vocal seems fuller and the mids section can be enjoyed fairly well in all genres. So naturally S08 will be ahead in this aspect.
If l think from the part of treble, P1 max ii is quite strong but it is in upper treble, although lower treble feels more unnatural due to its planar timbre. Its upper treble is a bit bright but not much of sibilance issue, details were fairly good. Though it failed often portray instruments to their full potential.
Again, the S08 treble region is very smooth, somewhat dull manner was noticeable because upper treble air & sparkle is lacking to a large extent. Because it will seem more acceptable to treble sensitive folks
Considering the technicalities though, the P1 max ii lags far behind. Along with its narrow staging, the depth of the stage is slightly lacking, besides, the imaging was good, although the accuracy of tonality & timbre was not good, it seemed quite average.
The S08 is not very impressive set in terms of staging & imaging, so the position of both can be said to be almost similar from this point of view, also micro details condition are also similar. But there's no doubt that the S08 shines the most in tonality and timbre accuracy.

★ Conclusion :-

The S08 planar IEM offers better value in terms of sound performance. Instead of Planar's typical technicalities, this time letshouer has given more priority to fun & relax sound due to which this set has been able to give more engaging sound. I'm quite happy that it has good timbre presence despite being a budget planar set. So if someone doesn't like treble too much and doesn't give priority to competitive gaming then I think it will be an ideal choice. This set is able to satisfy only those who want to enjoy the music for a long time while also finding fun factor in the music. So those who are used to such a sound signature, I would definitely recommend to buying it.

I've provided the purchase link below for everyone convenience

Linsoul Audio (link isn’t affiliated)

Letshouer Ali express store (link isn’t affiliated)

Letshuoer Audio S08 review

If the world suddenly stops sending me IEMs for reviews right now, I would be happy to settle with the Letshuoer Audio S08 forever in the under $100 price bracket. But first, I would like to express my gratitude to Letshuoer Audio for sending this for a review as part of a review tour in my country. No, I don't get to keep it, so I don't get anything for reviewing this great sounding set other than getting to experience it and share my experience with you.

The Letshuoer Audio S08, which cost $99, is a medium-sized IEM that fits perfectly in my ears. It is fully made of light metal and finished in anodization, so it is more durable than paint and powder coating. And I like how it looks.

The packaging is elegant and efficient; it includes high-quality eartips, a very good modular cable, user manuals, a cylindrical plastic case, and the IEMs themselves.

I used my Fiio M15s and Letshuoer DT03 with my phone; for my sources, I used the pre-installed eartips and the stock cable, as I find they are of excellent quality and don't feel the need to change them. The burn-in period is about 12 hours.
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Power handling, sensitivity, and drivability:
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It has no power handling issue; it can take a lot of power and can go very loud. Your ears will be the limiting factor. The sensitivity is average, and it can be driven by a dongle DAC like my Letshuoer DT03 with ease at its 4.4mm connection.



Sound signature:

Mild U-shaped with good energy throughout the frequency range, it is very balanced, sounding from bass to treble with the midrange having a slightly lower volume, which most people like, including me. It sounds totally non-fatiguing, musically engaging, and communicative. The tonality is excellent for me, and the instrument and vocal note weight are neither thick nor thin; they are just right where they need to be.

Technicalities:

Certainly not the best I've heard regardless of price, but good enough for me and surely above average in its price range.

The first thing I noticed about the S08 was the big soundstage. It has good depth, width, and height, but the imaging is not as holographic as the best I've heard. I can hear good instrument separation and details, but the projection of the majority of the images tends to be located a distance away. There aren't many images that are projected up close and behind me, again, not very holographic, and because of that, the layering isn't the best either. But is still above average overall in technicalities in this price bracket.

Bass:

Slightly boosted, thick, and well controlled. It has a fair amount of details but not the best texture I've heard in the price range. The subbass extension is nice but not the deepest I've heard in this private range. The decay is fast, so it's slightly dry, but overall, very clean-sounding bass.

Midrange:

Slightly lower in volume to bass and treble, relatively speaking. It sounds very even and non-fatiguing; the lower and upper midrange are well balanced; and it sounds equally well on both female and male vocals.

Treble:

The treble is well extended, has an has an airy sound, and has a nice delicacy in its delivery. It is neutral in tonality and has never caused me any listener's fatigue. The upper treble is slightly elevated.
The micro-details are very good.



Versus Letshuoer DZ4 (70 USD):

The DZ4 is midrange forward in a side-by-side comparison; it has less subbass and upper treble; the soundstage and imaging are slightly better on the S08. The only thing that's clearly better with the DZ4 is the rendition of female vocals.

Versus Hidizs MP145 (150 USD):

A popular planar IEM from Hidizs. Regardless of the nozzle used on the MP145, it has boomier-sounding bass, a more recessed midrange, and a more extended upper treble. The overall tonality of the MP145 is warmer than that of the S08, and they are about equal in soundstage and imaging, with the MP145 having a slightly bigger soundstage. They are about equal in instrument separation.



Versus Letshuoer S12 Pro (120 USD):

If you have the S12 Pro and want to upgrade from its uneven sounding treble and got tired of its V-shaped sound signature, then the Letshuoer S08 is the upgrade that you are looking for. The S08 has a much smoother treble, a bigger soundstage, and cleaner overall sound quality.



Versus Dunu Titan S2 (80 USD):

The Titan S2 has excellent frequency response; it has better bass extension, detail, and texture than the bass of the S08; they're about equal in midrange, with the Titan S2 having a more forward-sounding upper midrange, pushing the details more forward, and the S08 having a less forward upper midrange, resulting in thicker note weight. It is in the treble that the S08 wins; they have about the same details, air and extension, but the S08 has a cleaner sound in the treble with a cleaner and darker backgroud.



Versus Simgot EA500 (70 USD):

The OG EA500 is a very popular IEM; it has a mild V-shape sound signature while the S08 has a mild U-shape. The first thing I noticed while comparing them side by side was that the EA500 has a more elevated upper midrange and a less extended upper treble than the S08. They have similar bass sounds, but the bass on the EA500 is more detailed and textured. In terms of imaging and soundstaging, the S08 is clearly better.



Pros:

- excellent tuning
- very good sound for the price
- very clean sounding
- good soundstaging and imaging
- great cable included
- good eartips included
- comfortable to wear
- nice design
- zero listener's fatigue

Cons:

- The bass slightly lacks details and textures.





To wrap things up:

I like the Letshuoer Audio S08 a lot. The excellent tuning and fatigue-free sound, together with the good technical performance, make the S08 one of the best-sounding IEMs I've heard in the $100 price range. If I don't get sent anymore review samples and stop reviewing IEMs, I would be happy with the S08 as my endgame IEM in the 100-dollar price range. That's how satisfied I feel about the sound of the Letshuoer S08, and thus, I highly recommend it.

Keep on listening to music. Cheers!

Letshuoer Audio

https://letshuoer.net/.../letshuoer-s08-fourth-generation...

Disclaimer:
This product was sent to me by Letshuoer in exchange for my honest and impartial review. I receive no compensation and all thoughts and opinions are my own.

Gear used:
●LG v30+
●Samsung Galaxy s22 Ultra
●Samsung dongle
●Hiby FC4
●KiwiEars Allegro
●Letshuoer dt03

Source:
●Listening was done through Amazon Music HD or Ultra HD.



Introduction:
Letshuoer is a brand known to most audiophiles who have spent a bit of time in this hobby. The company has been consistently releasing a wide range of quality products, including iems, cables, and DAC/amps. A few recent notable releases include the Cadenza 4 and S15, which have been well-received. This year, the company celebrates its eighth anniversary and is marking the occasion with some new releases. Its latest iem, the S08, features Letshuoer's dual-coil custom 13 mm planar magnetic driver. It's currently available for $99 on Letshuoer's site as well as other retailers. Let's jump into the review and see how this newest planar stacks up in today's market.




Build, fit, ergonomics:
This is one of the better unboxing experiences under $100. A lot of thought and care went into the inclusions and presentation. The box is compact, and the featured artwork includes a figure eight to commemorate Letshuoer's eighth anniversary, a recurring theme throughout the design. Opening the box reveals the iems tucked inside foam cutouts and a small, puck-like case. Inside the case is a very neat circular tip holder and the stock cable, plus two modular terminations. The S08s are available in silver or matte black; I have the latter, and they look really great. The anodized CNC aluminum shells have excellent build quality and are reasonably lightweight for all-metal shells. They feel solid and smooth in the hand, while the matte-black finish helps minimize scratches and fingerprints. I would characterize the shell size as fairly small. The nozzle is of average width but perhaps a bit short for those who need deeper insertion. At least there is a lip for tips to stay securely in place. The shell design is highly reminiscent of the old Letshuoer Tape, but the S08 features a more ergonomic design with rounded edges and a figure eight on its faceplate, consistent with the anniversary theme. The four-core SPC stock cable is an excellent addition to the overall package. It's lightweight, nicely braided, and even has a modular locking mechanism with two terminations: 3.5 mm and 4.4 mm. The case is one of the more unique ones I've seen and is of really nice quality. I usually don't like the puck-style, but this one has a smooth, rubbery coating that keeps scratches at bay, and the lid screws on for added security and protection. The included tips come loaded into a neat little circular holder. There are five pairs in the holder and one more preloaded onto the iems, making six pairs in total: three vocal and three balanced. It took me quite a bit of tip rolling to find a good fit and seal. I tried both varieties of stock tips, Dunu S&S, Coreir brass, Tri Clarion, and eventually settled on the medium Penon Liqueurs. It's still not the most comfortable for me due to the shorter nozzles, but YMMV.





Sound impressions:
The S08 is a great example of neutral tuning done right, at least to my ears. Now, what is neutral for me will not necessarily be neutral to others, and admittedly, there is a healthy, thumping bass response here. However, the lows, mids, and highs all blend splendidly without any one truly taking the spotlight over the others. Music is presented in a smooth and natural way, without coloration. It reminds me of another recent Letshuoer product that I reviewed, the DT03 DAC/amp. I don’t think it’s a coincidence that these two were released so close together. Through my testing, I quickly discovered that the S08 is highly source-dependent. Of all the DACs I tried (Allegro, FC4, LG V30+, Samsung dongle), the DT03 has the best synergy by far with the S08. They are both so very natural and uncolored in their presentation, allowing the music itself to take center stage. This combination compels me to listen less critically and simply enjoy my favorite tracks. In true planar fashion, the S08 has a snappy, quick hit and fast decay. The detail retrieval is excellent but not overly clinical. There is a definitive smoothness to it's presentation and the timbre is natural and organic. The imaging is accurate, and the separation is excellent, with each frequency band having room to breathe. The note weight is fairly balanced between thin and thick, though it may lean toward thinness in some tracks. The soundstage unfortunately falls a bit short, as it is not particularly expansive in width or depth, but it's not quite claustrophobic. The S08 are not necessarily hard to drive, and they can reach moderate volumes from just a simple dongle. But like most planars, they scale well with power, which is necessary to achieve high volumes. In my opinion, this set is remarkably versatile and well-rounded and handles any genre with ease.




●Lows - This is the one area of tuning that I would argue goes a little beyond neutral. The bass is surprisingly meaty and well-textured. There's a deep sub-bass rumble, and it can get big and low when the track calls for it. The sub-bass is definitely more of a focus here over the mid. I would have liked slightly more mid-bass presence for my usual tastes, but this could result in a warmer and more colored sound signature. There's good separation between the bass and the midrange, and there's no bleed to my ear. The attack and decay are quick, but there's still adequate reverberation, which some planars struggle to achieve. Double bass kicks on this thing are really a treat! The driver's speed allows each impact to be heard clearly. My initial impressions of the bass were quite favorable, but further critical listening revealed some areas for improvement. Specifically, it could benefit from a more powerful impact/slam and a bit more clarity. Although overall, it is certainly one of the strong points of the S08's tuning.

●Mids - The midrange is also a very positive mark of the S08s tuning. Vocals are well reproduced and are neither forward nor recessed. Female artists with a bit more air in their vocals just approach a slight harshness but still remain enjoyable. Male artists have a bit more note weight and stand out in the mix more than their female counterparts. Instruments like guitar and piano have a rich clear tone and natural timbre. One particular track that I really enjoy with the S08 is "Like a Stone" by Audioslave. The emotion in Chris Cornell's vocals is conveyed exceptionally well, and the guitar distortion and reverberation effects are distinct and musical.I usually prefer the mids and vocals to be slightly more prominent, but the overall frequency balance is excellent and really lends itself to a great listening experience. If neutrality is your goal, the midrange balance of the S08 is spot-on. There's really not much to say about the mids. They are clear, concise, natural, and musical.

●Highs - The S08's treble is lively, pleasant, and smooth, without sounding boring or recessed. This aligns well with my personal preferences; however, I do believe that it could benefit from a slight increase in air and upper-end extension. Cymbals, hi-hats, claps, and snares all have a good amount of presence and sparkle without detracting from the overall musicality of the tuning. There is a definite crispness and edge to the notes without sounding harsh or fatiguing. If there are any perceived problems in the highs, they can be found in breathy vocalists and certain sounds such as "t" and "ch." However, this only became apparent at higher-than-moderate volume levels. In "Calm Down" by Rema featuring Selena Gomez, the claps can be quite fatiguing if the treble energy is too high, but with the S08, they sound clear without being sibilant. I find that the S08 strikes a great balance between delivering a vibrant and sparkly treble response while avoiding excessive energy that could lead to it becoming overbearing.




In conclusion:
One of my favorite things about this hobby is experiencing different driver types and configurations. Each of them brings a distinctive element to the music, allowing me to perceive it from a different perspective. Before the Letshuoer S08, I had nearly lost hope in finding a planar iem that would capture my heart. In my experience, planar drivers typically have impressive technical capabilities and agility; however, they lack a certain musical quality and can come across as sterile or lifeless. Well, the S08 broke the mold, and for me, it was love at first sight listen. From my initial testing, I realized this is not a typical planar, or at least it's different from those I have tried up to this point (F1 Pro, Pandamon 2.0, Zetian Wu Heyday, S12, Stellaris). The S08 delivers a musicality that I found lacking in other planars, while still demonstrating remarkable detail, speed, and resolution. It's also my new benchmark for neutrality, without coming across as excessively clinical, cold, or downright boring. My ears perceive all of the frequencies as balanced, cohesive, and well-represented. If you're looking for an accurate and uncolored reproduction of your music, you should definitely consider the Letshuoer S08. It has the typical agility and tactility of planar drivers but also sounds much smoother and more musical than the others I've heard. My only two complaints are the slightly short nozzle, which might cause some fit issues, and the narrow soundstage. If you can overlook these few shortcomings, you will find that the S08 provides enjoyable tuning, excellent technicalities, and a fantastic accessory package. Plus, at $99, the price-to-performance ratio is fantastic. What a great way to celebrate Letshuoer's eighth anniversary! Now, I can't wait to see what they have up their sleeve for number nine!



thaslaya's star rating system:
☆☆☆☆☆ - Fantastic!
☆☆☆☆ - Recommended
☆☆☆ - There are buyers but not for me
☆☆ - Can't see the appeal
☆ - Product is a failure

Number 8 has a strong significance in East Asian cultures particularly in Chinese as it was pronounced as “Ba” in Mandarin as it is sound similar with “Fa” which means prosperous, bountiful or wealthy. That symmetrical symbol on it also represents a continuous balanced and harmonious pattern on life.



And now LETSHUOER is celebrating its 8th year anniversary in the audio industry as they became one of the most successful and innovative companies out there and by its tradition, they always release a product that is associated with their yearly anniversary.



This is LETSHUOER S08, their latest planar IEM for the entry-level segment in which LETSHUOER have extensive experience on planar magnetic driver technology. To attest their knowledge on planar driver technology, they previously released some sets with similar driver technologies like S12, S12 PRO and S15 that makes them even more credible.



Inside of the LETSHUOER S08, it uses the latest generation of planar magnetic driver which is more compact on its overall diameter as it has size of 13mm. This new type of planar magnetic driver has its diaphragm with magnetic coil circuitry underwent via with copper sputtering deposition process as it implements a very thin film along with a PTR film on its side ends for a uniformity, control precision and maintain a high purity to lessened electromechanical reactions for a stable dynamics, lessens resonance frequency as it minimises distortion, improving transient speed response and well-extended range of its sound quality.



Then the driver was encased in a CNC-milled metal alloy shell structure with a stated design aesthetic that represents the number 8 on its faceplate with an oblong contour on its form factor. The overall size of S08 is quite compact as it has one of the smallest shell profiles among the planar IEMs in the market.



Its compact size is also relatively comfortable to wear as it snugly rests well into my lugholes with any discomfort like irritation and soreness. I really have a good sealing from its stock ear tips as it is able to block some unwanted external noises from the outside surroundings that gives an impressive passive noise isolation.



Regarding its stock cable, LETSHUOER includes a good quality one as it is relatively soft, flexible and resistant from entanglement with no microphonics issue that I've encountered so far. This cable is a 4-core silver-plated copper wiring with a detachable termination plug feature as you can interchange it from 3.5mm single-ended to 4.4mm balanced output.



For an entry-level set, The LETSHUOER S08 is quite fully packed with quantity and quality of inclusions. And all the contents inside are carefully presented and organised well.



Here are the following contents inside of its packaging box:

• Pair of LETSHUOER S08 IEM transducers
• Stock cable with modular features.
• 4.4mm termination plug
• Circular storage case
• Circular ear tips rack
• Three (3) pairs of balanced bore white coloured ear tips in different standard sizes.
• Three (3) pairs of balanced bore dark grey coloured ear tips in different standard sizes.
• Paperwork like instruction manual, warranty card and Q.C. stub.

As for power scaling and amplification, while its newer generation of planar magnetic driver appears to take less power output compared to the previous generation of planar magnetic IEMs as it is fairly a bit more sensitive but planar is still planar, and planar still need a substantial amount of power output just to drive it properly. If it was driven with a sufficient amount of power output, it would have a full-range sound with good amount of dynamics on it.



Upon my initial impression on how this set sounds like, it still has a balanced-neutral sound profile with a noticeable added bass-boost on its tuning. Some might perceive it as warmish-neutral given its added some warmth on its tonality that is closer to the perceived neutral sound on analogue-ish hifi sound back from a few decades ago.


(Graph was provided by @baskingshark , credits to him on his effort)


LOWS/BASS:

In this set, both bass sections are well-presented in a balanced manner on this one as it has a good sub bass presence while having a properly textured mid bass part as it delivers a punchy, reverberating and authoritative bass response while maintaining some semblance of segregation and controlled gradual bass approach across to the other frequency regions.

The sub bass presence is evidently clearly felt as its low rumbling and reverberation were generated by some low octave instruments like bass guitars, double bass, drum machines and synthesisers. The mid bass is well-textured with some good depth and volume suitable for the natural tonal colours of some bass clef instruments and male vocals such as bass and bass-baritones. Bass guitars and double bass have a weighty and dark sound with resonance on them while bass kick drums have full and sonorous sound. Bass trumpets have a full and darker timbre as I enjoy its solo passages on Wagner's repertoires. Bass and bass-baritone vocals are well-presented on this set as it gives a gravelly, woolly and fullness on their distinctive voices with good depth and volume on them.


MIDRANGE:

This is probably one of the strongest aspects of this set on how this particular frequency part was presented. While it appears that it was almost linear in presentation, it is also quite well-textured, full and with an appropriate warmth while maintaining some tidiness in its presentation. As if that almost all types of vocals and instruments sound very natural and accurate.

The male vocals on this one have its proper note weight to give a full, lush and smoothness on baritones whether its a light baritone, lyric, Kavalier baritone, Verdi, dramatic or noble baritone while tenors have brassy, strong and graceful sound on their voices. Countertenors have a tender, sweet and light tone on their vocals as they share similar sound characteristics with female mezzo-sopranos. On female vocals, the contraltos are the most highlighted among the female vocal-types as it has a proper depth and texture to give a rich, lush and smokey sound quality. As for sopranos, while it has less bright and less energetic sound on coloratura and some lyric-types but on some soubrettes, spinto and dramatic ones, they have some warm, rich and emotive voices on them.

On instruments, brass instruments like trumpets, trombones and horns, they have a a full, rounded and sonorous sound respectively while on woodwinds, while it doesn't have that airy or bright sound on some instruments, the concert flutes have mellow and some richness at the same time, clarinets have lustrous sound, saxophones have warm and a bit earthy sound, and piccolos have some graceful and delicate sound on them. Meanwhile on string instruments, cellos have a weighty and round sound while violins have a sweet and calming sound on them, and guitars either in acoustic or electric configuration have these meaty and buttery sound over crisp and bright sound. As for percussions, snare drums have that hard hitting and sharpness on their sound, tom-toms have warm and resonant sound, field drums have full and booming sound in them and kettledrums have a heavy and rumbling sound on every stroke. Pianos have an even and mellow tone on them as it has resonating, sweet and rich notes on its notation keys.


HIGHS/TREBLE:

While most planar sets used to have a brighter tuning , this one is quite different among its peers. It has a more balanced, smoother and even treble response but not to the point that it sounds too dark in my liking. For sure that treble heads will have a second thought on its treble quality due to insufficient brightness, that crisp and lingering bite and less intense sparkle. Upper-mids and presence treble part has an ample elevation just to give enough detail and definition on some vocals and instruments and I didn't hear overboosting that might produce a shrill, sibilance and strident sound.

On the brilliance treble, as I mention that it has less intense sparkling but it doesn't sound too dull and dry and it has a rather moderate airy extension. Regarding treble-clef instruments, cymbals have a lustrous and soughing sound while hi-hats have its correct timbre as it has a short buzzing sound. Celestas have a sweet and mellow sound and glockenspiels sound lustrous.


SOUNDSTAGE, IMAGING AND OTHER TECHNICALITIES:

As a planar set, this one is probably among the less technical planar sets that I've tested so far in my opinion but this one isn't that really bad as it was able to perform at above average in most aspects. Sound field size is rather on average to above-average on width, decent height reach and excellent depth perception within my aural sphere.

Its stereo imaging presentation projects a concave-like soundscape in well-layered element sections of frequencies and dynamic tones of instruments and vocals that I was able to pinpoint out its specific placement with a good separation on each of them.

Coherency performance of this set is quite impressive given that it's a planar magnetic driver. It has a fast transient speed response and better vibration with less distortions. As for resolution capability, while it's a planar set, it will be pretty resolving but S08 takes it on another path as it has more solid macro-dynamics while its micro-detail retrieval doesn't have that sharp definition but it still able to extract details and nuances from an audio track like some vocal ends, instrumentation tail and roomy effects.


PEER COMPARISONS:

NICEHCK F1 PRO

• Like the S08, its shell chassis is made of metal alloy but it has a tear drop shaped design.
• It also has a good quality cable but it doesn't have a modular feature but rather a 4.4mm balanced on its termination plug.
• It has a more V-shaped sound profile therefore it is more coloured.
• While it also has punchy and rumbly bass response, it appears that it focuses more on sub bass presence.
• Midrange is definitely recessed and leaner on this one but it is more bright and energetic.
• Its treble response is brighter and airier but it has some occurrences of sibilance and a tad shrill sound.
• It has a wider lateral span on its perceived sound/speaker but its layering aspect is rather a middling one.
• The micro-dynamics of this one is more resolving than S08 as it has a sharper note definition.

KEFINE KLANAR

• It has a shell chassis made of anodising metal alloy and it has similar compactness of its size.
• It also uses the latest generation of planar magnetic driver which also has similar sizes with the S08's own driver.
• It also has a good quality stock cable for its price but it doesn't have modular features.
• The KLANAR has a v-shaped sound signature but its tonality is somewhat a bit similar to S08 as it has a warmish-balanced tonality on it.
• It has a deep, tactile and punchy bass response.
• Midrange is a quiet recess but it has a warmth to give a lush, well-textured and rich sounds on vocals and instruments.
• It has smooth and inoffensive treble response just like the S08.
• It has very similar technical performance with S08 from stereo imaging, layering, separation, coherency and resolution capabilities but the KLANAR has a tad wider span on its sound/speaker stage.

As LETSHUOER is celebrating its 8th anniversary in the audio industry, they are used to releasing some commemorative sets which is a bit different from their usual product presentation and the S08 is one of its line-up. With an excellent build quality, a modular cable feature, fully-accessorised with contents and uncommon tuning which is unusual for planar ser. With an overall tuning which has a well-textured, rich and smooth profile while maintaining a balanced presentation.

While its technical capabilities will not fully impress us as there are some sets that offer a bit better on this aspect but with its asking price, it makes this set's appeal even more compelling towards budget-conscious audio enthusiasts.


The LETSHUOER S08 is now available at LETSHUOER's official store on their own website. Check out the unaffiliated link below.

LINK:
https://letshuoer.net/products/lets...tor-earphone-for-audiophiles-musicians-studio

For more LETSHUOER product reviews, just check out the following highlighted products:

■ LETSHUOER EJ07

■ LETSHUOER EJ07M

■ LETSHUOER EJ09

■ LETSHUOER S15

■ LETSHUOER CADENZA 12

■ LETSHUOER S12 PRO

■ LETSHUOER D13

■ LETSHUOER DZ4

■ LETSHUOER CADENZA 4

SPECIFICATION:

MODEL: LETSHUOER S08
IMPEDANCE: 25Ω
SENSITIVITY: 105dB
FREQUENCY RESPONSE: 20Hz – 40KHz
CABLE LENGTH: 1.2m
PIN TYPE: 0.78mm 2-PIN CONNECTOR (0.75MM)
PLUG TYPE: (MODULAR) 3.5mm, 4.4mm
DRIVER UNIT(S): (1) PLANAR MAGNETIC DRIVER


TRACKS TESTED: ( * = 16-bit FLAC, ** = 24-bit FLAC, *'* = MQA, '*' = DSD, *'= .WAV)

Alison Krauss -When You Say Nothing At All *
Jade Wiedlin - Blue Kiss**
Led Zeppelin - When The Levee Breaks **
Mountain - Mississippi Queen *
Queen - Killer Queen **
Guns N' Roses - Patience *'*
Eric Clapton - Tears in Heaven '*'
Sergio Mendes- Never Gonna Let You Go '*'
Pearl Jam - Daughter **
Roselia - Hidamari Rhodonite *
Assassin - Fight (To Stop The Tyranny)*
Celtic Frost- Visual Aggression *
New Order - Blue Monday *
The Corrs- What Can I do (unplugged version) *
Jimi Hendrix Experience - Voodoo Child *
The Madness- Buggy Trousers *
Metallica - Motorbreath **
Mariah Carey- Always Be My Baby *
Destiny's Child - Say My Name *
Malice Mizer- Au Revoir *
Mozart - Lacrimosa *
New York Philharmonic Orchestra - Dvorak- Symphony 9 " From the New World." *
Eva Cassidy - Fields of Gold (Sting cover)*
Michael Jackson - Give In To Me *
Exciter - Violence and Force *
Diana Krall - Stop This World **
Debbie Gibson - Foolish Beat *'*
The Sisters of Mercy – Lucretia My Reflection**
Suzanne Vega – Luka **
Lauren Christy – Steep *
Ottoman Mehter - Hucum Marsi *
Diana Damrau - Mozart: Die Zauberflöte*
Type O Negative - Black No.1 *
Felix Ayo - Vivaldi: Presto **
Three Tenors - Nessum Dorma *
Mercyful Fate - Witches' Dance *


P.S.

I am not affiliated to LETSHUOER nor receive monetary incentives and financial gains as they provide me a review unit for an exchange of factual and sincere feedback from yours truly.

Once again, I would like to send my gratitude to MS. BETTY of LETSHUOER for providing this review unit. I truly appreciate his generosity and trust towards me and other reviewers.

Introduction


The new Letshuoer S08 planar IEM was provided to Audio reviews Down Under tour group for assessment and review and thanks are due to Letshuoer for their confidence in our unbiased and honest reviews.
Letshuoer has been one of the early adopters of planar technology with the famous S12 followed by the S12 pro and the S15 third generation model.
The new Letshuoer S08 planar utilises a fourth Generation Dual Voice Coil custom 13mm Planar Magnetic Driver that the company has had considerable input in the development.
I’ll let Letshuoer explain some of the process. The S08 utilizes nanoscopic magnetron sputtering process, a high-end production method, on the planar driver’s diaphragm of S08, sputters the copper material onto the substrate. The nanoscopic magnetron sputtering technology coats the diaphragm with a layer of voice coil in addition to conventional drivers’ single layer voice coil circuit. They incorporated a PTR elastic film surrounds at the edge of the diaphragm’s voice coil, which makes the diaphragm perform with greater extensibility and stability.


What’s in the box.

We have the earphones and Letshuoer’s usual hockey puck carry box with the screw on lid containing two sets of silicone tips and a quality cable with a good soft feel. I would like to commend the company for providing modular cables including 4.4mm balanced plugs. Most modern dacs including Letshuoer’s excellent DT03 DAC have both 3.5 and 4.4balanced outputs. Offering consumers the choice by way of a modular cable is excellent practice that I hope more companies follow.I note that Hiby has also used this feature with their Project M IEM. I also like the modular connection with its screw threaded bezel for increased security.
The CNC precision-milled metallic earphone shell is both simple and light, being very comfortable to wear. It is available in black and silver versions to meet different aesthetic preferences.


The Sound

I used Letshuoer’s own DT08 dac attached to my Hiby R3 2022 DAP. Iprefer the sound profile of the DAC to the player. It’s clean and powerful with great bass extension and uncoloured. It provides excellent treble and details with plenty of power. I used anOpenheart 8 core silver coated copper cable and TRN T tips for bass extension and open upper frequencies.
I own a Hidizs MP145, and have reviewed the Letshuoer S15 and the NiceHCK F1 pro. I had a few days with the good old S12 as well. This gives me a good grounding on the various tunings and the “Planar Sound” as verses dynamic drivers/ BA Hybrid sound.

Firstly the S08 has a most un-planar sound. There is no sign of the dreaded planar timbre. Indeed the overarching sound is much more akin to a single DD IEM. From sub to mid bass there is a power and a warmth despite my DAC being neutral. The bass is very controlled and precise and never intrudes into the mids. You can sense the planar speed and precision but never straying into a clinical presentation. The sound is very full and rich. Vocals seem to be perfectly placed in the sound mix. Female vocals have a good natural timbre but sound energetic and energized. Male vocals, likewise are well presented with natural timbre and depth The S08 is easy to drive but does respond well to a more powerful DAC. Turning up the volume, the IEM retains it's composure and tonality. Compared to other planars the sound is definitely more bass oriented but unlike the S15 there is good space and air through the mid range. Both IEMs are musical butthe S08 with its newer driver seems to give a bigger head space. It's soundstage is much wider to my ears . Not to the extend of a MP145but very acceptable. It's a much smoother listen than the original S12, or even the NiceHCK F1 Pro, while still providing good energy and musicality.


Instrument separation is acceptable but it's not a detail monster. There is a good treble response that is easy to listen to without sibilance but it does not reach the levels of the more expensive MP145. Most people will be more than happy with the treble performance. I also note that with the right tracks the sub bass dives very deep and powerful. Above all the S08 is musical and easy to listen to for hours. The comfort level is high. The fun level is also high!


Conclusion

Letshuoer have produced an excellent next generation planar with the S08. This planar brings an immersive and impressive listening experience to a wide range of music styles. With the price coming in below the $100 mark it's one of the strongest recommendations of any IEM design at this level.

Letshuoer S08 Review​

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Letshuoer S08 Review ​

Intro​

Hello everyone, today I am reviewing the Letshuoer S08 from the audio brand Letshuoer. The S08 is a planar magnetic earphone which comes with a $99 price tag. That price puts the S08 in some tough territory, but also a great place for people who want to experience a nice planar set for around $100. The S08 is actually a nod to Letshuoer’s 8 years of being in business, which is a pretty neat thing to see and quite a feat for any brand who can sustain relevance that long in this day and age.

This particular planar set comes on the heels of some major players in the Audio hobby and some of those major players also happen to Letshuoer planar iems. I’m talking about the Letshuoer S15 (S15 Review), Letshuoer S12 Pro (S12 Pro Review), Letshuoer S12 (Mahir’s S12 Review), etc. There are a few more offshoots of the S12 series as well which performed very nicely in the market. The point is that Letshuoer has had more actual experience dealing with planar sets than almost anyone and they are certainly the most successful at it. No other brand has made such an impact in the hobby. Hence why I was extremely excited to check out this set.

Letshuoer​

So yes, Letshuoer has been in the business crafting earphones and audio devices for years now. We’ve learned that it’s eight to be exact. I cannot tell you how impressed I’ve been with this brand. I’ve reviewed a good handful of their iems and each is very well done and compete handily against the competition in their respective price points. Those are the Letshuoer DZ4 (DZ4 Review), Letshuoer S15 (S15 Review), Letshuoer S12 Pro (S12 Pro Review), Letshuoer Cadenza 4 (Cadenza 4 Review), not to mention the many reviews completed by my partners at Mobileaudiophile.com. Basically, the consensus is that Letshuoer seems to always be “at” or “near” the top of the field per whatever set they bring to market. Now, the S08 is a commemorative set which celebrates 8 years of bringing quality products to our ears and I’m more than happy to get to spend time with this set.

Let’s Go…​

Again, the $100 price point is absolutely chock full of great sets which are in direct competition to the S08. I’m not only talking about planars either. Thankfully it seems that planars are in their own category to a degree as usually planar sets only really compete against planar sets. However, for those who simply want the best listening experience for their money it will be a much broader look at the market as a whole. So, in essence the S08 really does compete with all iems under $100. I will try to make some relevant comparisons and try my best to explain this set to hopefully help you in making a purchasing decision. I think I’m ready to get this one going folks. The Letshuoer S08 everyone…

Non-Affiliated Purchasing Link:​

–Letshuoer.net
–Amazon US
–Linsoul

Gear used for testing​

–Ifi Go Blu

–EPZ TP50

–Simgot Dew4x

–Hidizs S8 Pro

–Aful SnowyNight

–Fiio Q15

–iBasso DX240 with Amp8 MK2

–Shanling M6 Ultra

Packaging / Accessories​

Unboxing​

The Letshuoer S08 arrived at my home in a nice-looking box with a sleeve which features a large “8” on the cover, all black. Inside the box you’ll find the S08 sitting pretty in some foam cut-outs. Next to the S08 you’ll also see the carrying case. Inside the case is the cable, tip tray, and you also receive the extra modular cable adapters. I won’t go too long with this unboxing. Basically, it’s a nice set of accessories for the price with a very nice modular cable, usable tips and a cool case that is handy to have. Nice job Letshuoer.

Eartips​

Inside of the packaging Letshuoer provides a total of six pairs of eartips and two different sets. The first set called the “Vocal” tips (S, M, L), is a black silicone tip with a semi-wide bore. Decent tips but not unlike many that we’ve seen over the years. I don’t like these tips for myself as the flange is very flimsy, I don’t get a good seal and they are basically limp. However, they seem made well enough and I know some people like these types of flimsy tips. The other set called their “Balanced” tips (S, M, L), is a white silicone eartips with a semi-wide bore, a rigid flange and a stiff stem. Somewhat similar to something like the KBear 07 tips. While I like those tips quite a lot, for whatever reason I could not get a consistent seal with the S08. I had to venture into my vast cavern of tips and pull out something that worked. I ended up relying on the Divinus Velvet eartips. With the Velvet in my ears the S08 fits perfectly. The sound also comes across cleaner and airier by a tiny margin. All things considered, the tips which come included are pretty nice.

Carrying case​

The carrying case that comes with the S08 is the same case provided with almost all of Letshuoer’s earphones. It is the round hockey puck shaped case with a threaded (screw-on) lid. It’s a very useful carrying case. This case is lined in what feels like a soft rubber. It’s a very neat case that I’ve always liked. I would say that you can only fit the S08, and the cable inside so be aware.

Cable​

The included cable is a nice addition. It is a brown 2-pin cable that has modular adapter plugs which get pushed on and then screwed in using Letshuoer’s twist-lock mechanism to hold the adapter tight. You have a choice of either a 3.5 single ended plug or a 4.4 balanced plug. I primarily used the 4.4 as most of my sources use 4.4. It’s a cool cable, folks. The braiding is very nice as well. The cable itself is a 4-core and 30 strand silver plated copper cable (SPC) which offers a nice and pleasing aesthetic paired with the S08. Of course, the bonus of a modular cable is the fact that you have some flexibility in how you listen. It’s a nice addition.

Build / Design / Internals / Fit​

Build Quality​

The Letshuoer S08 is a very well-built earphone. Nothing new to Letshuoer of course. The S08 is an all-alloy set which is obviously very durable. Most of Letshuoer’s planar sets besides the S15 have been all-alloy which is a nice thing to see. The nozzle is medium in length, nothing too large or too short. Like I said the fitment isn’t perfect for me and I did have to use better tips to get a good seal. The Shells themselves are not the largest. Does it make sense to call them medium sized? Makes sense to me. At any rate, it’s a nice build friends. It’s all metal for crying out loud. Of course, in the winter and outside the S08 will tell you it’s winter and you are outside. Watch out for humid environments as an all-alloy shell will condense if not vented well. The usual hangups with metal shells. Anyways, very well built.

​

Design​

As far as the look of the S08. It’s a cool and understated design theme. The S08 is designed with an “8” which stands for the eighth anniversary (obviously). You’ll notice that it was CNC machined into the faceplates and covers the great majority of them. I suppose that’s about as appropriate as you can get. Now I don’t think that this design and aesthetic is going to change anyone’s life and it isn’t the flashiest, but it’s a nice-looking set. The S08 comes in two colorways, black and silver. Obviously, mine is the black. There’s actually something to be said for a nice looking iem that wasn’t made to attract prospective buyers solely by the appearance. The S08 is classy, it’s Utilitarian-chic, or beautifully dull. The brown cable pairs pretty well though I would’ve enjoyed a fat black cable a bit more. However, they look nice together. It’s a good-looking set.

Internals​

I think we’ve already established that the S08 is in fact a “planar magnetic” earphone. Letshuoer actually went with a 13mm planar driver, but that’s just the beginning. They went through what sounds like an arduous R&D journey and added some nifty ingenuity to the process. This is actually a 4th generation driver with what Letshuoer calls “Nanoscopic Magnetron Sputtering Technology”, which is basically a way to put a very thin film on the diaphragm. In this case it’s a copper material that they are sputtering onto the substrate. This is said to balance the frequency and add some resolution to the highs. They also used a dual voice coil on the S08 and an elastic PTR film which surrounds the actual voice coils which is said to help with distortion, stability, balance etc. The dual voice coil helps to control the diaphragm’s vibration, reduce resonances, and basically increase the overall transient response swiftness. There’s some cool tech involved with this set folks and I can hear it every time I listen.

Fit / Isolation​

I’ve already briefly spoken on how the fit was for me. That is, not perfect. I really needed tips which were much wider and so the Divinus Velvet tips helped a lot with that, and the seal is perfect. So, you may or may not need to also go tip searching to find a set that fits you well. I am one person who’s ears fit almost all iems. I almost never have fit issues. However, without question the shape of the flat front end closest to the ear made it slightly more difficult to fit my ears. I have no idea how this set will fit your ears either. I’ve said this in countless reviews that I don’t even know why I out this section in my reviews. Nobody has the exact same ear anatomy, and every set will provide at least a slightly different fit between hobbyists. Beyond fit, the isolation is about average. I get decent passive isolation from outside noises. Good, not great, which is average to me. Like any other set.

​

Drivability​

The Letshuoer S08 is rated with an impedance of 26 ohms and a sensitivity of 105 db’s. This translates to… “Pretty easy to drive”. There was a time when driving planar magnetic earphones was a more difficult task. You couldn’t get nearly the correct dynamics from lower powered sources. Well, those days are slowly being technologically petered out with the advancements in driver tech among other parameters. So, the S08 is reasonably easy to drive. However, without question I do get better sound and scaling with two variables. First, definitely the S08 will not only scale to the quality of your source but they will also convey the tonality of your source very well too. Give this set a good source device and it’ll shine. However, with that the S08 will also slightly translate the tonality and overall sound character of your source well too. I never really felt that one source tonality was hugely better than another either. Warm, cool, bright, neutral, warm/neutral, etc. Next, the S08 will get marginally better with more power on tap. What I mean is that the dynamic range seems to grow in depth and vibrance. The low-end feels slightly less detached and more concrete in its note body. Macro-dynamics also get slightly more convex. These are all incremental improvements, but they are improvements, nonetheless.

Mobile Listening​

So, I will briefly go through a couple source devices that I used for critical listening. I wrote a few down in the “Gear used for testing” section but in reality, I used about fifteen altogether. I always check source tonality and synergy. Anyways, when out and about I will usually take with me whatever set I’m reviewing. In this case it was Go Blu with the S08 and let me tell you the pairing is fantastic for Bluetooth listening. There’s this underlying velvet style vigor that the Go Blu adds. Something in those dual CS43131 dac chips and amp section just fits with the S08. Out of my dongle dacs I definitely loved the EPZ TP50 the most. The TP50 is actually closer to neutral rather than warm. What I noticed is that the S08 slightly thins out but also becomes more resolving, slightly more open with very good dynamic expressions. Maybe a hint of sibilance, but not bad by any stretch and not annoying to me. The Aful SnowyNight also gave the TP50 a run for its money as it carries even more power and the same CS43198 dual dac chips. By the same logic, the Simgot Dew4x (also uses CS43198) was slightly less authoritative and dense in note weight, but good.

More juice​

Listening with my daps and dac/amps of a bit higher caliber and more talented sonically I definitely came to the conclusion that with more output the S08 agrees more with my tastes and probably synergizes the best. By the way “synergy” is a made-up word which basically just means “fits your preferences best”. There isn’t some magic synergy which just brings a set to its best ability. Sometimes we take things a bit too far in this hobby. Okay, carry on. Anywhoo, the devices I have with a much greater output are the Shanling M6 Ultra (close to 1W / AK4493SEQ dac chips), the iBasso DX240 (close to 1W / ES9038Pro flagship dac), and the Fiio Q15 (1.6w / AK4191EQ & AK4499EX dacs). The DX240 is an energetic neutral with a clean sound, the M6 Ultra is warmer, resolving, velvet, and the Fiio Q15 is a nice middle ground with amazing clarity and dynamism. I found that the S08 replayed very well on each but would tend to skew one way or another per whatever source I was using. In my mind, and to my preference (synergy), I find that the M6 Ultra is flat out juicy with a galvanizing quality to the warm presence that I hear. However, the S08 does well to play into each device’s strengths. One thing I can say for certain is that the S08 does scale to the actual increase of power on tap. Now I’m sure there’s a point where you cannot scale anymore. After all this is a rather easy planar to drive. But if I were to guess, I’d say that the S08 really begins to scale at around 150mw @32ohms. A rough guess.

What do you need? ​

I think that you need nothing more than a good dongle dac at the least. I don’t think that a smartphone will give you everything you are looking for and won’t bring the S08 to proper fidelity. Maybe fidelity is the wrong word. I should say that you likely won’t bring the S08 to its best ability with a smartphone. I’m sure if that’s all that you have and cannot get anything more than a smartphone will replay the S08 decently. Still, for $69 you can get the Simgot Dew4x, or for $70 you can get the Hidizs S8 Pro, for $65 you can get the Moondrop Dawn 4.4 among about 50 more under $100. So, if you can save up a bit more you will really be able to let this set shine.

Sound Impressions​

Prior to any critical listening, I was so looking forward to hearing where Letshuoer was going to go with this tuning. I own the S12 Pro and S15 and both of those were worlds apart from each other. I suppose I suspected more of the same. Maybe Letshuoer would try something new. Well, that’s at least partially true. The Letshuoer S08 comes across as a subtlety warm V-shaped sound signature. I suppose. I think we get into the weeds a little bit giving these sounds a “letter” distinction. Basically, the S08 is on the warm side and the mids are only very slightly recessed while the treble is only slightly emphasized. So… Slight V. To be totally honest I find the balance to actually be quite good. You have what appears to be an 8db bass shelf in contrast to a 7db pinna rise so… balanced-V. However, even with the balance there is a slight warmth which is cast across the mix. That said, my ears tell me that the bass is lifted quite a bit which surprised me the bass shelf was only 7-8db’s.

Fluid​

At any rate, the sound is very nice for a $99 planar set and once again Letshuoer is showing their skills at tuning. There are some subtle issues that some may “subjectively” not enjoy, and I will highlight those within this review. However, in the grand scheme of things the S08 is a nicely melodic iem with a more musical sound. Again, warmer, well balanced across the frequency, smooth over crisp, slightly less detailed than previous Letshuoer planar magnetic earphones (S12, S12 Pro) yet making up for it in its ability to convey emotion in a euphonic and mellifluous manner. You don’t have those hard and crisp note outlines with exact, precise, and rapid transient attack through decay. This set is more fluid. We call it smooth but really, it’s plusher.

Timbre​

Now, another thing I have been enjoying about the S08 is the non-planarish timbre. There are a few areas where mistaking the S08’s planar for a DD wouldn’t be out of the question. In many ways the S08 is more atmospheric and organic than many other planar sets. At least in my opinion. Of course, when someone can tell me what “organic” sounds like I’m all ears. When I say organic, what I mean is that the sound comes across with a warmer hue, no odd timbre, no peaks, no metallic edges around notes, not too colored one way or the other and just generally more lifelike. There’s no real quantifiable way to measure how organic something is. Also, to others it may mean something different. In the case of the S08 it means that the sound isn’t really “planar-like” in its timbre, it does come across more lifelike and does carry that more earthy and warmer tone. I will say that the transients are a bit quick in some instances. Harmonics aren’t always as drawn out as some folks would like as at times in May seem that they come across a hair clipped, not as natural in that regard. Of course, that’s just a result of using a planar driver. Also, it really isn’t bad in this set. Letshuoer did a nice job.

Bass Region​

The low-end of the Letshuoer S08 comes across meaty with enough solid boom to almost give bass bois something to look forward to. However, I did say almost. I don’t think this is a basshead set. Not quite there but this set does have an emphasized bass region that is not at all weak and does provide a very satisfying rumble for fans of a bigger bass section. But not basshead. The bass is simply prominent against the mix. Now there are some slight subjective issues with the low-end, but I don’t want to get ahead of myself. Without question the S08’s bass region is a very full bass which does linger over into the midrange, loitering enough to add some warmth and smoothness to the midrange. The S08 carries a bass which feels sort of heavy, and in my opinion is probably the focal point of this iem. Even with the nice balance across the mix. Turn on any bassy track and you’ll see what I mean.

Nice… Period​

Now, yes, it is a bigger bass, but I feel it’s emphasized more due to the less brilliant and prominent treble. There isn’t a huge counter against the weight of the low end. Also, I feel it’s the mid-bass which sticks out more to me. This is also a smoother bass which isn’t necessarily the most defined area of the frequencies. Don’t get me wrong, it certainly isn’t bad at all. It simply isn’t that razor sharp planar style definition. In fact, the S08 almost comes across like… dare I say… a dynamic driver. It really is close. Not quite, but close. I say this because although it is a fuller bass, it still has good texture, some sort of roundness, and I can feel the rigidity and densely weighted rumble of a good and deep bassline. This isn’t a flat plane of bass in front of me and it isn’t pillowy either. There may be some lacking reverbs and harmonics, but the S08 still has all the earmarks of a solid planar bass. This is a meaty low end with some actual vivacious grunt and has a forward boom to it. It has good impact. I mean, it actually has some well textured and round bass punch which has a darker vibrance to it. It’s nice for a planar folks. Shoot, it’s nice period.

Sub-bass​

I love a good, deep, and haptic type of bass that I can feel. A deep bass adds so much to my music. Another dimension in the sound field. Especially if the notes are rounded and full. The sub-bass notes on the S08 are such that I can feel the rumble. It’s got a chunky sub-bass which gets pretty guttural and able to provide a very low drone when needed. Songs which are recorded with deep chunky bass as the focal point of the track will definitely be mimicked with the S08 in your ears. This is a set which can reach low but with an almost constrained tightness. “Blues Worse Than I Ever Had” is a track by Marcus King which has a decently rotund bass guitar that reaches to a low-toned and rich sound. The S08 has that tighter decay and releases in a quicker manner than DD’s. On one hand the S08 can take on more complicated tracks than sets with DD’s, but it can also lose out on some of the resulting harmonics with planars. The S08 seems to buck that trend a bit better than other planar sets. There’s a little more resonant weight, and there’s a little more meatiness to the bass guitar with the S08 in my ears than on some other planar sets. Also, there’s darn good haptic and vibratory feedback with the S08.

Mid-bass​

Looking at the mid bass, we have a tighter and very stoic bass in this region with the S08. Again, it’s fast because of this planar’s ability to attack and recover quickly and at the same time sounding very palpable and visceral with a textured slam. It isn’t completely atmospheric like a DD, or as resonant, as those two attributes are usually the main distinctions between the two driver types. But it’s very close, all the while also carrying all of the planar good traits. Again, stoic, meaty, punchy and full. Also tight, densely weighted, vibrant, & rounded. Basically, just about any descriptor which explains something that can… Bang! Yet the timbre is off, just a bit, as it isn’t perfectly authentic to life. Don’t take this as a bad thing. It’s just a different thing. On the same token, the mid-bass of the S08 can literally take on most any track in this region, no matter how complicated the track is.

Mid-Bass cont…​

Now the S08 is a hair boomier than other sets which does move upon the midrange and can be a bit too present in the sound field. Depending on the track you are listening to of course. Again, especially on tracks with a dominant bass. But the mid-bass does have very nice texture and tackiness. It isn’t pillowy to me. Songs which are supposed to slam will hit very hard. Kick drums carry some authority as they have nothing flat about them with the S08. Tracks like “Move Along” by The All-American Rejects shows this quite well. It’s a hard snap and wet attack in unison with a resonant boom. So, the mid-bass has some good muscle and while it may be a hint too colored at times, it’s still got a certain quality to it that I feel is unmistakable. As far as planars are concerned and the price this set is being sold at. That’s just me though.

Downsides to the Bass Region​

Of course there’s always downsides, issues, and preferential things that people don’t necessarily like. Of course there are. I’ll try to throw a couple of em’ in here. The first and most obvious thing that some may not enjoy is the boominess and quantity of the S08’s bass region. Many folks would put a mark against the S08 for not being quality in this way. The bass can overtake the mix during bassy tracks. They may also say that the S08 bleeds too much into the mids. While I don’t agree with this for myself, I do understand how some would think that. Some want that tucked bass, that clean midrange, that manicured bass without the extra fat falling into the mids. Understandable. Also, some can only enjoy an atmospheric and organic sounding bass region. Again, I get it. I was this way for a long time before I realized how nice a planar bass can be. Or a good BA bass. For the record, I love almost all sound signatures and styles so I’m pretty easy in this way. I like them all. However, the S08 has a great mix of quality-meets-quantity. It’s a polarizing place to be actually. A huge swath of the community just really doesn’t buy into it. Also, really quick, I have to judge this set against its peers and the cost to own it. I have to think about the pricing here. This set is $99 folks. The S15 from Letshuoer costs three times that price and it is only marginally better down low. Yes, it can be a bit boomy and intrusive if you are sensitive to a heavier bass, but for what it is and how it was tuned, the bass is quite nice.

Midrange​

The midrange of the S08 has some smoothness to it. I don’t feel the S08 is 100% planar like with knife-edged contours and crisp attack. It’s a more relaxing vibe which is helped by the very slight warmth brought on from the bass region. Just north of neutral. Just barely. Enough to provide some good body to notes. This is most definitely not a thin midrange. Furthermore, there’s nothing analytical about this set in the midrange. The mids don’t sound greatly pushed back but instead are ever-present and with a fullness to them. More forward than they are recessed. Just enough elevation in the pinna to add some lift and levity to the sound, especially in the upper midrange. The S08 is also just open enough and separated enough to give a feeling of some space. As for timbre, the S08 is actually… decently… organic. I hear a subtle warmth. Perhaps not the most clear and clean sound on planet earth, but it is still very pleasant to my ears. I feel like the last 10 reviews I’ve done I’ve remarked about each set’s musicality over its technical talents. Well, the same can be said of the S08. It’s more musical and gripping in the S08’s ability to draw the listener in rather than create a stage in front of you.

For a planar…​

I say all this with planar magnetic earphones in mind. Certainly, there are iems that are literally tuned to captivate the listener through its midrange prowess. There are many which come to mind. Think about it, there’s a good amount of great midrange sets between $75 and $125 US. However, for a planar earphone, which usually aren’t beloved for their midrange abilities, the S08 (much like the S15) is actually nicely natural in tone and has a nice midrange timbre. Now, transient attack through decay is pretty expedient and nimble, but the body to notes is wider, fuller, and “bodied-up” … so to speak. These two qualities almost cancel each other out in some respects. In the end the midrange isn’t the most resolving, maybe slightly overcast, not as crisp and glass lined as some sets we’ve seen. But it’s pretty darn musical for a planar and makes for nice sounding vocals and natural sounding instrumentation.

Lower-midrange​

The lower mids carry a sprinkling of warmth. Not perfectly neutral and not highlighted and foregrounded as much as they are naturally weighted with a good note body. So, it’s a little warm here. Males come across with some decent note body, but also don’t come across with great clarity. I called it overcast in the last paragraph and I stand by that. Yet this isn’t a bad thing. Men have some authority to the inflections and intonations in their voices. To an extent anyways. For some instruments this is a good thing and for others it doesn’t help as much. However, male singers seem to do well with a hint of low-end girth and weight. Tracks like “Take Me Home, Country Roads” by Home Free is an acapella group which shows off just about every male voice type. The S08 truly helps this track to sound awesome. The blending of all of those male voices is captivating on this set. Of course, many sets can do the same, but it should be noted. Or the track “Cover Me Up” by Jason Isbell. This track does very well with this set as his voice goes from feathered and soft to resounding and emotional. That warmer and more organic timbre suits the song. The strumming acoustic guitar has a nice wet sound to the strings yet with a softer presence and paired with Jason’s vocals is a nice mixture with the Letshuoer S08 in my ears. I feel most males follow this trajectory and find a decent home in the S08.

Upper-Midrange​

I listen to quite a lot of female vocal tracks and find them to be a decent portion of my music library. For females I like a hint of shimmer, some sparkle, some moist body to notes and I don’t like metallic sounding voices or too much glare. I like a natural sounding female, slightly forward and almost on a pedestal within the mix. One part emotional and one part transparent. Somewhere in the middle. I personally feel it misses just a little bit on the sparkles and shimmer but nails it with a slightly rich note body and natural tonality and timbre. I’d also say that this region is less snappy or brisk then some people would like (me included) and the upper midrange isn’t the most intricate, transparent, or detailed. Additionally, I hate to say it but, there’s an ever-so-slight touch of sibilance in more vibrant female voices. So, it isn’t perfect and not everyone will fall over themselves trying to get to this set. Despite all of those minor gripes, I’ve had a very nice time going through my “vocals” playlists with the S08 in my ears and females are a big part of that.

Upper-mids cont…​

So, beyond the slight issues, the Letshuoer S08 is a very well-tuned set and the upper-mids are a big reason for that. We have a less than monumental pinna rise of about 7-8 dbs. However, the S08 actually still has a good balance of the frequency. I find the upper mids to have just enough openness and space to operate. They have enough air and separation to not sound congested. Females generally come across easy going, but also poised, fairly rich, but not bogged down or too wide in note structure and they do have just enough shimmer adding just enough of that sprightliness to female voices and instruments. Also, how nice it is to have a planar without showing any signs of planar timbre. Very much like the S15 in that regard. The S08 is a solid set for vocals in general but females seem to stand out a bit. Tracks like “Thank You Aimee” by Taylor Swift have such a delicate and flowery articulation of her voice while still being well able to infuse the sound with some lightly subdued vibrance and buoyancy. Or “Skeletons” by Suzannah. This track has a moody western vibe with her slightly dead panned vocal delivery. Her voice is sweet but solemn, all to engage the listener with the emotion of the song, and the S08 is able to convey this mood driven track quite well. Certainly, better than a dry, distant or analytical style set could convey it. Of course, this isn’t unheard of as many sets can perform such a task. Still, the S08 keeps the mood of this track whilst also authentically replaying the strumming acoustic guitar and drum beats with a tighter transient decay and great initial attack.

Downsides to the Midrange​

There aren’t many outright issues that I hear other than the fact that the S08 doesn’t replay certain harmonics to their natural release point. Some of them seem a little bit clipped I suppose. This may or may not be important to you. Also, some instruments could use a hair more vibrance and snap to them. Perhaps a bit more of a bite and crispness. Like I said the mids are more smooth, slightly relaxed and not as immediate in their sense of attack. I think the S08 could use a bit more pointed and acute energy at attack as the midrange may be a hair too relaxed for some folks. Beyond that, the S08 is one of the best in pure timbre from the planars within its price point. There is the Kiwi Ears Melody which also does timbre well and a couple others. Yet for the most part the warm & subtly weighted note body, organic sound and reasonably detailed midrange of the S08 should satisfy many.

Treble Region​

The one area that I would most like to see some added emphasis would be the treble region. I find that this region lacks proper bite in attack, and it doesn’t carry that hard vitreous snap and contoured crunch of a solid treble region. Of course, I didn’t expect it to either as that type of emphasis is not what Letshuoer was going for. Also, this isn’t to say that it’s a bad thing, just maybe not my perfect preference at the moment. Which I’m sure will change soon, always does. With that said, I can easily wrap my brain around this wholly inoffensive and sibilance-free sound that coast through my Playlists with a smooth demeanor, good weight, rounded notes, but also good treble extension. There simply isn’t that brilliant and energetic lift in the treble to uplift the rest of the mix, to add that last bit of sparkle, and not enough to really increase resolution to my ears. The highs on the S08 mostly come across as relaxed. Notice a theme yet? Great for chilling and just drowning in music.

Hit the target​

That all said, the treble region also plays very well into the signature or target that Letshuoer was shooting for. The S15 is similar in that it too isn’t so lifted in this region. Maybe just a hint more of a treble emphasis on the S15, yet also the S15 comes with better technicalities (separation, details, transients etc.). I use the S15 a lot in this review because there are some slight similarities. FYI. Anyways, the S08 highs do have some air to them. At least the bare minimum so as not to sound congested or overly dull and bland. So no, the treble isn’t emphasized to the moon. There’s no forced resolution, no elevated peaks, and it isn’t sheened-out in treble tizz or splash. This treble exists to help with the overall musicality of this planar earphone and act as a good supporting cast member. That’s it. So, I imagine the tuning falls right in line with the target that Letshuoer was hoping to achieve. Furthermore, many people enjoy such a sound so it’s understandable why Letshuoer went this route.

Not of bad quality​

I notice the treble presents instruments very well in a macro sense as they have good body, decent clarity up top and they do have a nice transient decay. Besides that, the S08 isn’t completely devoid of texture and bite. Actually, I find the lower treble to be nicely textured with some treble punch. Like I said the decay is similar to any other planar, in that it’s fairly quick with more exact recovery. Now this decay does strip some harmonics in the region, but I doubt many will even pay attention to that. However, as far as detail retrieval with the treble is concerned, the S08 isn’t bad at all. Even with the less emphasized highs. Overall, the treble on the S08 comes forth a bit smoother and less glass-lined, less precise in its articulation due to less brilliance and slightly fuller in note body. To a degree anyways. I feel that if there was just a bit more emphasis in the presence region and a bit more lift in the air region of the upper treble than the S08 would likely resolve some of those subtleties easier. To be honest, the treble isn’t of bad quality. In a nutshell, you lose out on some of those finer details because of that, among other things of course, but I’ll cover that later.

Broad strokes​

I can say this for sure though. The S08 does have speedier fundamental notes, even with the slightly fuller body. It can keep up with most tracks that I use for my treble Playlists. Whether it be Billy Strings rocket fast banjo in “Secrets” (and any other of his tracks), Lindsay Stirling in “Eye of the Untold Her” off her Duality album, “Bishop School” by Yusef Lateef, or if it’s Eugene Ormandy and the Philadelphia Orchestra in Bach’s Greatest Hits playing “Toccata & Fugue in D Minor”. Whatever it was that I was listening to, the treble does recover each note well and keeps pretty rounded notes too. Again, not a bad treble but just an under emphasis which comes across a hair less sprightly, peppery, and luminant. Some will love it, others will not. That may be a very “broad stroke” way of putting it, but it is probably going to be the case.

Downsides to the Treble Region​

The biggest gripe that some will have is what I’ve already spoken of through most of the treble portion of this review. The treble simply isn’t lifted enough. I believe that this will affect not just treble heads. For sure they won’t jive with it. Yet it will also likely affect moderate treble-bois or even those who enjoy a better dynamic balance across the mix. Because of this lack of intensity and energy up top what you are left with is a nice treble that just sounds a hint warmer and not as resolute as it could be. I’m not talking about forcing the resolution either with some drastic lift full of saw blade style peaks. No sir, I’m talking about just a hair more balance with the low-end muscle. More air, more openness, and more room for notes to breathe in a slightly brighter setting. As it is, the treble isn’t bad with nice treble bite, nice treble punch, nice attack through decay speed and attack energy. Not bad at all.

Technicalities​

Soundstage​

The soundstage to me is how the soundstage on most every in-ear monitor sounds. It’s about average to my ears. Certainly not grand in its size. But also, it isn’t congested either. The width of the sound field is average. Just like the width, the height seems about average as well. Now, one area where planars seem to have the most trouble is in depth of field and the S08 sort-of suffers the same fate. There is most certainly some depth to my ears. I can hear some front to back layering to a small degree on most any track I listen to. But for the most part the depth isn’t great. Is it a flat plane of sound in front of me? Not exactly. Let’s put it this way, it’s about average for a planar. So, while the stage isn’t super colossal or stadium-like, it also isn’t congested or constrained. There is some air to the sound, even with the warmer hue to my music.

Separation / Imaging ​

Separation of elements within the imaginary stage is not how most planars fare on the S08. It all depends on the track you are listening to but if you have a complicated track with a ton of moving parts… the S08 will likely not sound as though there’s a lot of space between those instruments. There’s some body to notes on this set and that fuller sound isn’t coupled with an ultra-airy presentation. So yes, you get the talented and quick speed of a planar, but you also get slightly less spacing. Again, not at all bad. I’m not saying that. I simply don’t want you to think you are getting some technicality first planar when in fact the S08 is a musically inclined iem first. Imaging follows the same pattern. Just lacking a hint of breathing room. Some tracks will fare much better than others and even some sources will make a pretty large difference. It’s all about the tuning here. I feel that Letshuoer got what they wanted and tuned the S08 in a nice way, but it doesn’t bode really well for all technicalities. Again, probably average in the world of iems but probably not as good against other planar sets. It’s a musical set boys and girls.

Detail Retrieval​

As far as details goes, I’ve mostly answered this throughout my review, but I’ll couple all those words together in one paragraph. Basically, the Letshuoer S08 is tuned to be an earthy, organic and more natural sounding planar. This is something that we’ve only seen in a handful of planar sets since the “planar revolution” popped-off. In my opinion, the only planar iems which take on a more natural sound are the S15 from Letshuoer, the S08 that I’m reviewing today, the square planar sets from Celest (are they really planars?… Not really.), the Raptgo Hook-X, Kiwi Ears Melody, and that’s about it. Of course, there are some I haven’t heard so don’t yell at me if I didn’t include one. At any rate, even those tuned to have that organic quality still have some semblance of planar timbre. I find the S08 to be almost completely devoid of any of that. One more thing, I have nothing against planar timbre. At times you can hardly even notice it. The MP145 from Hidizs has a touch of it and that set is phenomenal. So, I’m not here rallying against the sonic artifacts of having a planar driven earphone.

Woopty-Doo​

Why am I saying all of this? Because in seeking to tune this set more organic and musical, Letshuoer had to decrease the treble energy, add some earthy & meaty bass, and add in some driver tech that… by all accounts seems to actually work. Still, the S08 isn’t a detail monster. It just isn’t. Nor would I want it to be. Folks, we’ve heard those. We’ve heard amazing details in planars. Woopty-Doo. However, those detail monsters also sound very unnatural, tinny, metallic at times, and simply have that planar timbre that we always talk about. Now these are just my thoughts folks. Anyways, even with the more musical take, thicker note weight, less treble increase and a dialed back presence region… the S08 is still above average in detail retrieval. Maybe for planar sets the S08 isn’t up to snuff. However, in the grand scheme of things the S08 from Letshuoer is still a very talented set which can resolve quite a lot within my music. To be honest, I’ve grown to really enjoy this set for what it is. I don’t want analytically precise. I don’t want tinny. No sir. If I wanted that I’d simply listen to one of my 15 other planars that are collecting dust (besides the Hook-X, MP145, and S15). Friends, the S08 couples together good timbre with some pretty good detail retrieval and I’m okay with it.

Comparisons​

Kiwi Ears Melody ($89)​

The first comparison I have today is the Kiwi Ears Melody. This is a set that I meant to review, and I wanted to review. However, time didn’t allow me as too many previous obligations kept me from doing so. However, I have used the Melody in a few reviews now. Anyways, the Melody is a very well-tuned iem which houses a single 12mm planar driver made by Kiwi Ears “in-house” which is pretty cool. The Melody is about as “Plain-Jane” as a set can get, nothing flashy about it at all. But it isn’t how the Melody looks that’s nice. It’s all about the sound.

Differences​

There is only a $10 difference in price between the two of these planar sets and I find they both represent the under $100 planar space very well. That said, the Melody is a bit bigger in stature while housing a smaller driver. The S08 is also lighter than the Melody which is nice. I do feel that the S08 comes with a better cable as it is modular and pretty nice for an inclusion. Beyond those things, the S08 is a hint harder to drive, not by much. However, the Melody & the S08 are decently easy to drive from most any source so I don’t find this a real “difference” per se. I do feel that the build and design of the S08 is much better than the dull looking Melody. The S08 is all alloy whereas the Melody is made out of 3D printed plastics. Real nice plastic, but plastic, nonetheless.

Sound Differences​

To begin, the Melody carries a better balance across the mix leaning somewhere around neutral while the S08 is a hair more bass heavy, less trebly, and a hint warmer. The S08 also has a bit better note weight to go with that warmth. The bass of the S08 is more forward, vibrant, hardier and more concise. Whereas the Melodies’ bass is a hair flabby in comparison, with a wider note presence, flatter structure, more pillowy on attack but both have good density. The midrange of the S08 is closer to the listener, not as recessed and V-shaped as the Melody. Now, neither set is a resolution master, and both lean in on their note weight and musicality and they both have an organic and more natural timbre. However, the S08 does provide details a hair easier and its transients are better, tighter, more exact. Again, neither set is a detail master (keep that in mind). The treble of the Melody has more of an emphasis and contrasts the bass region very well balancing the mix a bit better. It has better extension into the upper treble too. I find the stage to be wider on the Melody while the S08 sounds taller and slightly deeper too. Between the two I’d say the S08 succeeds at bringing a more robust and clean sound. However, both iems really do timbre nicely and neither comes across as having planar timbre. Not to my ears anyways.

Final thoughts on this comparison​

This is a hard comparison for me as I love these two sets. I really do. I love that they both have the speed and agility of a planar iem, but they try to mimic the timbre and tonality of a dynamic driver. Both of them do extremely well against most any set within their price point. However, for me, I do find the S08 to be more refined, more dynamic even though it has a warmer tilt and slightly better technically besides the stage size. Both are great and both deserve more attention than they’ve gotten.

Letshuoer S12 Pro (MSRP $169, now found at $135)​

Oh, the Letshuoer S12 Pro (S12 Pro Review). I have so many great things to say about this set. It was the first best planar I heard. Better than the 7hz Timeless at the time of its release in my opinion. Better than its predecessor the Letshuoer S12 too. All are fantastic iems, but the S12 Pro simply outplayed them both in my eyes. The S12 Pro carries a massive custom made 14.8mm planar driver which sits inside of an all-aluminum housing. This set is absolutely gorgeous. That Royal Blue colorway with the shiny silver aluminum trim is one of the classiest and uniquely simple designs I’ve ever seen and still is one of the prettiest, er… tough, looking sets in the market. It’s a dope look. Anyways, the S12 Pro went on to reach Audioverse stardom making many thousands of people very happy with their purchase.

Differences​

To begin, both sets are not huge. Medium in size, but the S08 is in what appears to be a pill shape, while the S12 Pro is whatever shape the S12 Pro is? I don’t know. To add to that, the S12 Pro fits my ears better, possibly a bit more ergonomic than the S08. It’s close because I can always get a good seal with both, but the S12 Pro does hug my ears better. Anyways, the S12 Pro and the S08 have a nice set of accessories as well as very nice cables. I do find the S12 Pro’s modular cable to be a hair better (for me) but they are both great included modular cables that don’t need swapped out. So Letshuoer packaged them both very nicely with a good case, good tips, and good modular cables. Both are all alloy, both built like champs, both are sweet to look at. However, again, I find the S12 Pro to be a better looking iem. I like them both quite a lot, but the S12 Pro is simply on another level in the design arena. The S08 is the tiniest of hairs harder to bring to volume but both are sensitive enough planar sets. Just a few volume clicks equal the two sound levels. Of course, the S12 Pro is also about $35 more expensive, so take that into consideration.

Sound Differences​

I find the S08 to be a warmer iem with less vibrancy then the neutral/bright replay of the S12 Pro. The S08 doesn’t have the resolution of the S12 Pro and the clinical style detail retrieval of the S12 Pro. The S12 Pro has larger and more expressive macro-dynamics and dynamism to the less energetic and less offensive S08. That said, the S08 is also the more organic and realistic sounding set with less of a planar timbre at times. Not that that’s a bad thing or a good thing. Still the S08 has the more earthy and weighted sound. Which brings me to note weight and density. The S08 definitely has more note density and note body in general.

Between the 20’s compared​

Now, looking at the low-end, the S08 has slightly more impact and slam, more of a crisp impact than the denser S08. Both have good extension down low in the sub-bass. Neither are pillowy and both have high quality bass. The S12 Pro is probably having a better-defined bass region then the S08 as well. The midrange of the S08 is heftier, a titch warmer, and more analog to the cleaner, more vivacious and better clarity if the S12 Pro’s midrange. I find the S12 Pro to have more shimmer, vibrance and sparkles than the S08. However, with that the S12 Pro also has more metallic timbre next to the S08’s lush and rich and earthy sound with no planar sounding timbre. Listening to both treble regions the S12 Pro certainly has the greater emphasis, much more brilliance, treble crispness, separation and treble bite. The S12 Pro has more of a contoured and extended treble. It’s just brighter. The S08 in the other hand has better note body in this area, less sibilance, and the S08 doesn’t fatigue the listener like the S12 Pro can. The S12 Pro’s treble simply colors the rest of the mix a bit more. Technically the S12 Pro wins out almost across the board, better detail retrieval, separation, Imaging is better, wider stage too. But the S08 does seem to have that better depth to it. Both are great at what they were tuned to be.

Final thoughts on this comparison​

I really thought I was going to hear another S12 lineage with the S08, but really the S08 seem from the S15’s family tree. I gotta tell you guys, I love both of these sets and listen to them both quite a lot. They both offer me two different ways to listen to planar iems. One ( S12 Pro) is more clinical and cleaner while the other (S08) is warm and natural with better musicality. This is a preference battle folks. Meaning, you’ll know right away which you’d prefer just by their sound signature and tonal differences. Whatever you like will be an easy choice for you. Both are fantastic and no… I don’t feel the S08 is an S12 Pro upgrade. If anything, it is a different side grade option that is also a very good sounding set. In fact, those who prefer musicality and emotion more than details, dynamism and vibrance will likely love the S08. Again, both are great at what they were tuned to be.

Is it worth the asking price?​

Okay, now it is my turn to answer if the S08 from Letshuoer is even worth the $99 that Letshuoer is asking for it. I have to imagine that anyone who detest earthy and musical sound and who adores more of an electric and clean sound has already stopped reading. So, the only people still here are me and those who love some good ole’ musicality. For us, the S08 is a no brainer folks. I’m not even going to beat around the bush. Letshuoer could’ve asked for more for this set. In fact, they probably should have. $99 is a steal if you enjoy what I’ve described so far in this review.

The Why? ​

Because the S08 is built with quality in mind. The all-alloy shell is obviously durable and strong. No accidently crushing this under your foot, none of that as the S08 will hold up. Next, the S08 is a dope looking set. Whether you get the silver or black model, they’re both super cool looking. A unique design that is great for smaller ears. The S08 is also well accessorized with a great modular cable as well. Yet as always, it’s the sound that gives this planar iem the “no-brainer” distinction. The bass is dense, deep, and can hit a low drone as well as provide some great impact and a solid thud when needed. Yet it’s also a fast bass which doesn’t get tripped up very easily. The midrange has awesome note body for a planar with toned down vibrancy but wonderful timbre. This is a set that celebrates musicality first and does so in an organic and natural way without the usual planar timbre. Lastly, the S08 will not offer offense to anyone’s ears. It’s simply a great listen full of emotional inflections and bodied sound. This is a good set. I really mean this folks, the S08 is a solid option for anyone looking for a planar, or any other driver type iem under $99. It’s a good set against most any iem if the tuning agrees with you.

Ratings (0-10)​

Note: all ratings are based upon my subjective judgment. These ratings are garnered against either similarly priced sets or with similar driver implementations or styles with the unique parameters of my choosing. In the case of the Letshuoer S08 ratings below, that would be $75-$125 planar driver iems. Please remember that “ratings” don’t tell the whole story. This leaves out nuance and a number of other qualities which make an iem what it is. A “5-6” is roughly average and please take into consideration the “lot” of iems these ratings are gathered against. $75-$125 US planar iems is a small sized scope of iems, and so it isn’t difficult for a set to see a rating above a “9.0”. My ratings are never the same and each set of ratings tells a different story. Each time you read one of my ratings will be unique to that review. Basically, I create a Rating that makes sense to me.

Aesthetic ​

–Build Quality: 9.5 Built well, all alloy, very nice.

–Look: 9.0 Aesthetically pleasing design.

–Fit/Comfort: 8.7 Not bad at all.

–Accessories: 9.2 Great modular cable.

–Overall: 9.1

Sound Rating ​

–Timbre: 9.8 Organic, natural, robust.

–Bass: 9.7 Big, deep, authoritative, clean, defined.

–Midrange: 9.3 Musical, no odd timbre.

–Treble: 8.5 Less emphasized but still nice.

–Technicalities: 7.9 Decent, musicality over technical stuff.

–Musicality: 9.0 Nicely musical.

–Overall: 9.0

Ratings Summary:​

To summarize the ratings above I should reiterate that these ratings are garnered against planar iems between the prices of $75 and $125 US. There’s a decent size scope of planars in this range but not nearly as many as one would think. The smaller sized pool of iems does provide some larger ratings. However, I feel that if I was a consumer, and the S08 was a possibility to purchase, and what I wanted was a planar iem, then I’d want to get a judgment against similarly priced iems. So, $75 to $125 made sense to me. Maybe not the best range but oh well. This gives you a $50 window to purchase a planar set. At any rate, I felt that made sense.

Take that back…​

Actually, I take that back, ratings don’t make much sense to me at all. Ya know, I try to conduct these ratings in a meaningful and helpful way. I don’t just give blanket ratings against the entire field of iems within the Audioverse. That wouldn’t make sense. After all, this isn’t for me, it’s for you. It’s for those of you who are trying to find out if the set I’m reviewing is worth it against similar “other” sets. Thankfully after reviewing for so long, I’ve accumulated a ton of iems to compare against and I feel very fortunate and blessed for that. However, ratings don’t ever tell the whole story. A Rating can be extremely deceptive as most iems should only be graded as a whole. When you rate in individual parts or aspects of the sound than what you get is a skewed overall look at something that was tuned in a particular way for a particular sound signature. I get DMs quite a lot from folks who are only going off of the ratings and want answers for them. So please, from here on out, take these with a grain of salt folks.

Explain Yourself!​

The first and only rating that I feel some would have issues with is the “Treble” rating if “8.5”. That’s a fairly high rating for a treble that is described to be less intense, not for treble heads and not as detailed or clean as other planars. I get it. However, in my mind, the S08 does have a good treble, it’s just under emphasized. The treble has great note body and structure along with good bite and attack. It’s a solid treble folks. That said, I wouldn’t argue with anyone over it. This set is pulled so far in one direction that I understand anyone taking issue with it. Maybe the “Midrange” rating too. I gave the S08 a rating of “9.3” which is actually pretty darn high. So why? Because the mids have that creamy and textured sound. They have weight to them, they’re moist, and the midrange is not far recessed but instead pretty great for vocals. Just in an under toned and less vibrant manner. I’m sure I will hear other issues but the S08 is a nice set folks and it’s “9.0” overall rating is worthy of it. Nice work Letshuoer!

​

Conclusion​

To conclude my full written review of the Letshuoer S08, I have to first thank the wonderful and helpful people over at Letshuoer for sending me this unit in exchange for a full review and feature at Mobileaudiophile.com. Thank you so very much! Letshuoer is awesome as they never bother me with asking to change words, skew my words, offer to pay me, or pre-read any review. If they did then that’d be the last time I review for them. No way, this company is solid, and they stand behind their products. They offer up review units and let the chips fall where they may. This takes a strong belief in your product to leave impressions at the hands of a subjective reviewer. This review was a good one for the S08, but it wasn’t glowing. There are issues, there are things I’d like to see changed. However, it is a very good set and I’ve had a blast reviewing and spending time with them. So, kudos to Letshuoer and kudos to you for reading this far. I truly hope it helps you as that is my greatest hope. Anytime one of you messages me to tell me that they love a set that I personally recc’d… it just makes my day. Truly! Thank you for clicking the link and spending time here. Thank you! You doing so is what keeps us going and it also happens to be what feeds the Google algorithm.

Other perspectives​

Now that you’ve read this review, go and read someone else’s review of the Letshuoer S08. I’m just one-man folks. One man, with one mind, and one set of ideals and preferences. This hobby is thee single most subjectively judged hobby in the world. Name another one. I don’t know, possibly wine tasting but that’s about it. This hobby is ridiculously subjective, and one man’s treasure will be another man’s garbage and vice-versa, this I promise you. There will be those who think I’ve lost my mind and I’m okay with that. It’s just what the hobby is. This hobby deals in likes and dislikes and incremental and subtle aspects of the sound can completely change the view that someone has of that sound. I implore you all to remember that. Please. So, check out other reviews, read em, watch em, or listen to em. With that said I am definitely done. I’ve had a great time with the S08 and now I’m ready to simply casually listen to my music with them. Before I go, I want to state that I do personally recommend this set for anyone seeking this signature in a planar form. Take good care, stay as safe as possible, and always… God Bless!

DISCLAIMER

I would like to thank Letshuoer for providing this review unit.

The Letshuoer S08 can be gotten here: https://letshuoer.net/products/lets...tor-earphone-for-audiophiles-musicians-studio (no affiliate links).





SPECIFICATIONS

• Driver configuration: 13 mm planar magnetic driver
• Frequency response: 20 Hz - 40 kHz
• Impedance: 26 Ω
• Sensitivity: 105 dB
• Cable: 2-pin, 0.78 mm; 4-core silver-plated copper cable; has 3.5 mm and 4.4 mm modular options
• Tested at: $99 USD

ACCESSORIES

Other than the IEM, these are included:

- 3 pairs of wide-bore silicone eartips (S/M/L)
- 3 pairs of narrow-bore silicone eartips (S/M/L)
- Cable
- Modular plugs for 3.5 mm and 4.4 mm terminations
- Hard case

For a sub-$100 USD set, the accessories are pretty comprehensive, other than the lack of foam tips.




Tips-wise, we have a wide-bore and narrow-bore variant. The former provides better treble air and staging, whereas the latter boosts bass with some compromise in soundstage.




The stock cable is a 4-core silver-plated copper cable that is relatively well-braided. It is a bit springy, but has minimal microphonics once a chin cinch is employed to secure it to the nape of the neck. The selling point is its modular design, with 3.5 mm (single-ended) and 4.4 mm (balanced) terminals available: this increases versatility with source pairing. I liked that there is a screw-on mechanism to secure the distal modules, unlike just a regular plug-on type, which may inadvertently loosen and cause the connected DAP or phone to crash to the floor!




Letshuoer does not skimp on their hard cases from their past releases, and once again, it is nice to see their round screw-on hard case here. It has soft innards to cushion the contents, and the externals are tough enough to survive a knock or drop.

The rest of this review was done with the stock cable and stock wide-bore silicone tips. No aftermarket accessories were used, so as not to add any confounders to the sound.


BUILD/COMFORT

The Letshuoer S08 is fashioned from CNC-machined metal, with each side having an asymmetrical motif. During ordering, one can choose between a black or silver-hued shell. The faceplates are emblazoned with a number "8" figure, which in Chinese culture represents prosperity and luck.



The shells are light and ergonomic, with no poking edges on the inner aspects. I did not face any discomfort on longer listening sessions. Neither did I find driver flex on my pair.



Isolation is surprisingly above average despite the heavy venting.


INTERNALS

The S08 packs a 13 mm planar magnetic driver, which incorporates a nanoscopic magnetron sputtering deposition on the diaphragm and voice coil. There is a PTR elastic film suspension at the periphery of the voice coil, which is marketed to improve stability and flexibility.


DRIVABILITY

I tested the S08 with the following sources:
- Apple dongle
- Cayin RU7
- Chord Mojo 2
- Fiio KA11 dongle
- Fiio KA17 dongle
- Khadas Tone Board -> Schiit Asgard 3 amp
- Questyle M15 DAC/AMP dongle
- Sony Walkman NW A-55 DAP (Walkman One WM1Z Plus v2 Mod)
- Sony Walkman NW A-55 DAP (Walkman One Neutral Mod)
- Sony Walkman NW WM1A DAP (Walkman One WM1Z Plus v2 Mod)
- Smartphone

This IEM is quite hard to drive. While it may be powered off a weak smartphone, the sonics scale optimally with amplification, in terms of dynamics, soundstage and bass tightness.


SOUND & TECHNICALITIES

Graph of the Letshuoer S08 via IEC711 coupler. The 8 kHz area is a coupler artefact peak.

Tonally, the S08 sports a warm L-shaped profile. Essentially, this is a smooth and pleasant signature that is well suited for chilling and relaxing to.

This set is sub-bass focused, with decent sub-bass extension and rumble. It isn't a basshead IEM by any means though. The mid-bass has above average texturing and slight mid-bass bleed. Bass is relatively nimble when amped optimally.

The lower midrange is warmed by the mid-bass, which bestows sweetness and lushness; we hear a thick note weight. Upper mids hit a mere 5 dB ear gain, and vocals are far from shouty (rejoice! you anti-pinna gain gang!).

The S08 can be considered darkish in the treble. There is no sibilance and this region is smooth and fatigue-free. We do lose some resolution and clarity, but treble-sensitive folk will be very at home with the tuning choice. Conversely, trebleheads and analytical junkies might need to look elsewhere.

The S08 has decent timbral accuracy for a planar IEM, and is probably one of the least unnatural planar sets in this department. It doesn't sound as natural as a true DD though, as there is a bit of hollowness to acoustic instruments if one pays very close attention.

This set is more of a musical IEM than a technical one. While layering and imaging are nicely done, soundstage is quite average, even with amplification. Micro-detailing is not class-leading amongst planar competitors, in part contributed by the treble roll-off.

As a result of the above confluence of factors, the S08 actually sounds more like a smooth laid-back DD than a traditional sterile and analytical planar transducer!


COMPARISONS

The S08 will be compared against other planar IEMs residing around the $100ish range. Hybrids, multi-BAs, and single DDs, which have their own pros and cons, are left out of the comparisons.




Letshuoer S12 Pro

The S12 Pro is an aggressive V-shaped planar from the Letshuoer stable, that has a way more steroid-infused treble. It has greater air and treble extension, though we hit sibilance and harshness with the S12 Pro. The midrange is less bodied, with a thinner note weight heard on the S12 Pro.

The S12 Pro has an unnatural metallic timbre. However, it has improved technical chops, showcasing better micro-detailing and soundstage than the S08.


Hidizs MP145

The MP145 has 3 tuning nozzles to vary the sonics among of spectrum of U-shaped tones, and hence it is more versatile. Across all tunings, the MP145 can boast of better treble extension and clarity.

The MP145 is slightly less organic in timbre, but has superior soundstage and micro-detailing.

Notably, the MP145 has huge sumo sized shells, which may pose a fit issue for some consumers. The S08 on the other hand, is much more ergonomic.


CONCLUSIONS



The Letshuoer S08 is very atypical for a planar IEM. It is more of a laid-back and relaxed fish, compared to the dime-a-dozen technical and analytical sharks we nowadays associate with the term "planar". The S08 furnishes a warm tonal balance - with a thick note weight and decent timbre greeting listeners - culminating in a sedate upper midrange and treble; this makes the S08 fatigue-free, and a great partner for long marathon listening sessions.

This musical IEM offers a lush and euphonic signature, albeit at the expense of losing some technical prowess; as such, trebleheads might find the lack of higher-frequency oomph to be not their cup-of-tea. Thankfully, it is well-accessorized and has good ergonomics. However, the S08 is not the easiest customer to drive, and amplification is recommended for optimal sonics.



Actually, the S08 is a smooth criminal that sounds closer to a dynamic driver than a traditional planar set. This contrasting signature may perhaps allow it to stand out from the planar crowd, and is a recommendation for folks who want something tranquil and languid.

TLDR version on YouTube: TDLR - Letshuoer S08

The S08 have been sent to me directly by Letshuoer in exchange for the publication of my opinions in this review. Letshuoer have not made any requests or comments and I will do my best to be as unbiased as humanly possible in my review, as always.

The official page for the Letshuoer S08 can be found here: https://letshuoer.net/es/products/l...tor-earphone-for-audiophiles-musicians-studio

As with all links that I share, the above is a non-affiliate link.

To avoid being repetitive in my reviews, you can find all the info about how I create the reviews, equipment used, how I receive the products and how to interpret my reviews by visiting: About my reviews



Intro…

Letshuoer have announced that, to celebrate their 8th anniversary, they will be releasing various new models and the S08 is the first of them.

This model is certainly not the first planar by Letshuoer, with the S12, S12 Pro, Z12 and S15 all being models that are well known in the IEM world. I personally have a soft spot for the S12, as it was the first planar magnetic IEM that I liked enough for it to become my daily driver for quite some time (between review and review that is) and the S15, while a completely different flavour of IEM, was also a set that I enjoyed.

In their pre-launch publicity of the S08, Letshuoer say that they are sure that the S08 will remind people of the other models in the S series of planar IEMs, although they have opted for a completely different shape and also a smaller driver in the form of a 13mm instead of the 14.8mm found on their other models.

While I know that there are already some reviews out there of this IEM, I have managed to not read them or pay much attention to comments, which is how I prefer to review things when possible. I will also say that I am putting together this review before the actual launch of the S08, although it may already be available when I actually publish it, so I can’t confirm the exact price at this moment but Letshuoer did mention it would be under $100, which is always a nice price point for planar IEMs (as long as they are good of course).



Presentation…

The last few products I have received from Letshuoer have all been excellent in the packaging and accessories department. While the S08 is a little more basic than things like the S15, it is still a nice experience and includes a decent amount of content.

The black outer box has a design on it in the form of an 8, with basic text on the front. On the back we get the basic specifications of the IEMs in 3 languages, along with a scratch sticker to prove the authenticity of the IEMs.

Sliding out an opening the inner box reveals the instruction manual and warranty card, underneath which we find the round screw top storage case, something we are used to receiving from Letshuoer lately, along with the IEMs sitting in sponge cutouts above it.

Inside the storage case, we find the cable, a replacement connector for the cable (more on that in a moment) and a disc storing 3 sets of “balanced” ear tips and 2x sets of “vocal” ear tips, plus another set of vocal tips that come installed on the IEMs.

In all it is nothing out of the ordinary but it is a nice set of accessories, all of decent quality, and I have no complaints at all under the 100€ mark.



Build and aesthetics…

As I mentioned in the intro, the S08 opts for a different shape to the previous S line up, with an oval shell that I find to be very comfortable and easy to obtain a seal, with the correct size tips of course. The faceplate has a 3D raised shape that resembles an 8, with Letshuoer engraved into one IEM and a logo into the other.

The shells are made from aluminium and are available in black or silver, with the black being the one I received. The aesthetics are discreet but elegant and, while I haven’t seen the silver model in person, I really like how the black version sits inside the ear without drawing attention to itself.

The included cable is also very nice at the price point that this IEMs sits at (if the sub $100 price is correct). It has interchangeable connections, which is not new for Letshuoer, but in this case there is a ring that screws on to the connector holding it in place. I like the design of the connector and, although I haven’t experienced any issues with the push on connectors in the past, it does add a bit more robustness to the connection. The cables itself is nothing really special, and it does have plastic connectors at the IEM end, but it is not overly thick or thin, and uses a four way braid that looks good in the dark brown colour it uses (at least for the black model).

Overall I am a fan of the aesthetics and the comfort of the S08, finding them to fit easily in my ears with a fit that is deep enough to use my usual size of tips but not be overly intrusive.



Sound…

All tracks mentioned are clickable links that allow you to open the reference track in the streaming service of your choice (YouTube, Tidal, Qobuz, Spotify, etc.)

Letshuoer teased in their publicity that this would remind people of other S series IEMs and it does, in some ways, but is its own thing in others.

As with many sets that we are seeing lately, at least the sets that seem to be coming across my desk, there is a tendency towards a more relaxed and laid back signature, without as much brightness in the upper end, which makes IEMs need more performance in the detail department to not fall behind the competition, due to the fact that they are not relying on those upper ranges to push forward that (sometimes false) sensation of detail.

This seems to be the aim with the S08, with a frequency response that does remind us of the S15 in some ways but not in others. Here is the graph of the S08 in comparison to my usual preference response:



And here it is in comparison to the S12 and the S15:



Now, moving on to my subjective opinions, which don’t always align with the graphs, I immediately see the resemblance in the lower notes to the S15 and the S12. We have that planar speed that keeps the lowest notes of “Chameleon” clean and clear, yet there isn’t a lot of rumble really. Not that there isn’t presence in the subbass, there is, it is just that, as it is fast and clean, it doesn’t seem to be as present as on other sets.

It is impressive how the S08 can keep up with “Chameleon” without feeling strained or about to lose control, yet it is also a little “polite” in the way it presents this track. The presentation of “No Sanctuary Here” fits the S08 better in my opinion, as it benefits from that slight “politeness” in the lower ranges, making for a track that is present yet not boomy at all.

With my midbass fatigue test, “Crazy” is a little too present in the midbass range but it is clean enough for that reverb to not become fatiguing. One thing I did notice with this song is that the upper mids, which we will talk about in just a moment, do affect her vocals in a negative way. There is a dip in the 3k range that sort of hollows out her voice in that range, putting emphasis on the frequencies just below and just above that range, making her come across a little fragile and also harsh in her upper vocal ranges.

Listening to “Tears In Heaven” I was very impressed by the separation and width to this track, with details being very apparent in the multiple instruments, yet I also got the sensation that the timbre and tonality of the same instruments were not quite correct, lacking a bit of body to them and having an overly emphasized upper range. Much the same as with the vocals in “Crazy”, this lends to a slightly fragile sound.

I do find that the slight dip in the upper minds can affect some tracks much more than others. For example, “Long After You’re Gone” is another guitar plus vocals track and the fragility That I noticed with “Tears In Heaven” is not present, with the track seeming to have plenty of body and a nice fullness to both guitar and vocals.

Listening to “Billie Jean” by The Civil Wars, I once again get that sensation that something is not quite correct with the guitar and male vocal, even seeming a little nasal on occasions, yet the female vocals sound full and present, whereas with other female vocals, I can get that thinness again and slight harshness.

It is not really an issue with sibilance, at least not with the usual culprits such as “Code Cool”, it is more something that appears just when certain vocals or instruments that have a certain presence in that area coincide with the dip and it leaves things a little harsh and thin.

I will say that I am impressed with the detail and the space that these IEMs offer, with good separation both left to right and front to back. There is a wonderful sensation of space between the separate layers of “Strange Fruit” and the location of instruments in “La Luna” is very good.

Treble extension is not the best and can lead to a little sensation of dullness on certain tracks, depending on what the style of recording is. For example, it is much more noticeable with certain instruments such as acoustic guitars and pianos but is not really noticeable with more electronically focused music.



Conclusion…

The Letshuoer S08 is a set of IEMs that leaves me a little confused. With certain tracks they can come across as a little dull, with others, there is no sign of that dullness at all. Certain acoustic tracks seem to have good tonality and timbre to the guitars, whereas others seem to come across as a little fragile and harsh. The same happens to vocals, where a certain female vocal can be fragile and a little spicy, yet another, even in a similar range, has more body and presence.

One thing that I can’t deny is that these IEMs perform well. The planar drivers do what they are good at, they provide speed and detail. They are not the most detailed of IEMs out there but they are still good and will still present the details in a way that is enjoyable. The bass is very well controlled and defined, seemingly coping with even difficult tracks easily.

So it is just the tuning that leaves me a little confused. Now, I don’t speak about EQ in my reviews, at least not usually, because I like to judge things in their stock form, but personally, I think that the S08 are a very good candidate for some EQ tweaking. They perform well and just some slight reshaping of the upper mids makes them come alive and sound much more natural to my ears.

I think that is an important note here, you have a sub $100 set of IEMs that is well built, comfortable (to my ears), looks good (to my eyes) and performs well, so even if you find you are not fond of the stock tuning, a touch of EQ will soon turn it into a very enjoyable IEM.

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As always, this review is available in Spanish, both on my blog (www.achoreviews.com) and on YouTube (www.youtube.com/achoreviews)

All FR measurements of IEMs can be viewed and compared on achoreviews.squig.link

All isolation measurements of IEMs can be found on achoreviews.squig.link/isolation