LETSHUOER (Shuoer) EJ07M

We have another in-ear monitor to review from LETSHUOER and its the EJ07M. This mid-tier is not their latest entry and has been released somewhere in 2021. For $650, will it be a worthy purchase?

DISCLAIMER:​

• I have no affiliation with LETSHUOER and have not received any monetary compensation during or after writing this review. This unit is provided to me in exchange for an honest and unbiased review.
• As a non-professional reviewer, I aim to use simple terms that can be understood by both beginners and experts in the hobby.
• Please keep in mind that the opinions expressed in this review are subjective and based on my personal experience with the unit. I encourage you to try the product yourself to form your own opinion.

PACKAGING​

The packaging of the LETSHUOER EJ07M is quite large for an in-ear monitor, while its inclusions have the basics. Inside the box, you'll find a top-tier protective case, an assortment of 6 pairs of eartips, 3 pairs of memory foam tips, the cables, and, of course, the core IEM itself – the EJ07M driver.

BUILD QUALITY​

In terms of build quality, I'm impressed by the EJ07M's lightweight design and its captivating color scheme, which adds a pleasing aesthetic touch. It has a recessed 2-pin which adds more durability to the pins. The included eartips and cables come across as somewhat cheap. On a positive note, the case displays a robust and high-quality appearance.
The Letshuoer EJ07M showcases a tribrid configuraton, incorporating a 10mm dynamic driver to manage the lower frequencies. The midrange and high-end is managed by Sonion drivers. And as we know, Sonion drivers are often found on mid-range to high-end products which really speaks for EJ07M's quality.

SOUND​

The sound profile of the EJ07M offers a well-balanced sound signature, adhering to the Harman target.

BASS
The EJ07M boasts a well-balanced bass presentation with commendable coherency. While a subtle midbass thump is noticeable, it has a nuanced and polished texture rather than an overwhelming impact. The sub-bass has substantial depth and satisfying thickness. This quality contributes a weighty feel to the bass when required, yet it can also recede when not necessary due to the reduced emphasis on midbass frequencies.
MIDS
The midrange exhibits a subtle recession, which in turn provides a warm and authentically natural midrange presentation, albeit at the expense of some intricate details. Vocals possess a euphonic quality and boast a notably rich texture. The upper-midrange frequencies have a safe tuning, preventing upper-pitched vocals from sounding overly sharp. This tempers the prominence of instruments, resulting in a lack of excessive brilliance. Notably, the absence of an aggressive bite in elements like trumpets and vocals can lead to slightly underwhelming execution. Overall, this lack of details on the midrange doesn't bother me that much since I like my midrange leaning to a natural and euphonic sonic profile rather than a forward and detailed one.
TREBLE
As the EJ07M closely resembles the Harman tuning, its treble is toned down to provide an enjoyable and more restrained treble response, all while maintaining a sense of definition. This measured approach leads to a gentle and soothing treble that avoids any harshness or edginess. This lack of emphasis result in a certain softness and bluntness to the treble. Instruments present in the treble experience a lack in shimmer and energy sometimes making some tracks focused on cymbals, trumpets, and piano sounding dull and lacking a bit of definition.

TECHNICALITIES​

Turning to the technical aspects, the EJ07M showcases an above-average soundstage. This spatial quality is marked by expansive dimensions in both width and height. Impressively, the imaging capabilities of this midrange in-ear monitor stand out, offering remarkable precision and accuracy in rendering the arrangement and positioning of instruments across the soundstage. The imaging possesses a sense of fluidity and remains unburdened by any sensation of compression, allowing it to unfold freely.

TEST TRACKS​

DISCLAIMER: I use the high-quality versions of these tracks on reviewing. This is only a compilation of my test tracks on Spotify. And hey, a media player looks very appealing on my posts don't you agree?

CONCLUSION​

Pros:

• Excellent, balanced sounding in-ear monitor that caters majority of listeners
• Has a good aesthetic appeal
• Easy to drive
• Imaging is excellent
• Excellent packaging
• Safely-tuned treble

Cons:

• Not for bass heads and trebleheads
• A modular cable could be a good addition for more flexibility

Purchasing the EJ07M at a price point of $600 might be considered a daring leap, especially without prior audition, but I can offer some reassurance that its tuning is quite safe and versatile, catering to a broad range of listeners. However, it might not be the best fit for bass enthusiasts or those seeking an exuberantly energetic treble. In terms of sound quality, packaging, and build, the EJ07M appears to be a solid choice. LETSHUOUER has presented several products that have garnered my approval, and the EJ07M seems poised to join their ranks. Also, there are some that I also disliked, ehem D13.

TONALITY: 8.5/10
TECHNICALITIES: 9/10
TIMBRE: 8.2/10
SPATIALITY-IMAGING: 8.8/10
CONSTRUCTION QUALITY: 8.5/10
COMFORT: 8.5/10
ACCESSORIES: 7.5/10
SOUND VALUE: 8.5/10


THE INTRO

Letshuoer is a chinese audio company that is specialized in IEMs making and nothing else. They've been around since 2016 and release popular hybrid, tribrid, planar and DD earphones.
Their best seller is the S12 single planar earphone which after 2 years still have a solid fan base.

Today I will review a mid-tier IEM from them that as been around for 2 years: the EJ07M.

Priced 650$, the EJ07M is a tribrid using 1x carbon nano tube DD, 2x sonion BAs and 4x sonion EST.

The M in this model is for Monitor, so these are aimed for stage musician and audio producer, but not only.

Let see in this review if those pass test of time after 2 years or if it's an IEM that should be forgotten.


THE PACKAGING, CONSTRUCTION & ACCESSORIES



The construction is simple yet elegant and sturdy. Its made of thick and heavy stainless steel metal. The powder blasted paint for the finish is very smooth. The size is surprisingly small and ergonomic too. 2pin connector are not recessed but solidly embeded to the body. Their no cratfmanship imperfection to be found.
The nozzle is very short, so these are thinked for shallow fit and their no deep fit possible, this could be a drawback for some but not for me. Passive noise isolation isn't bad too, surely due to thick metal used.
Their a venting hole at the side too, which do minimal sound leakage.
Ive read some complaint about driver flex but didn't encounter this.

Oh, and their 2 design and color to choice from, other one look like this:



Now when it come to cable quality, i'm a bit let down.



It's a basic ''high purity OCC crystal copper cable'' with either single ended 3.5 plug or 4.4 balanced plug. For a 650$ IEM, it's not a very impressive cable and don't do justice to the technical performance EJ07M can achieve, you don't want this slight warmth that this cable add for the high fidelity restitution potential of this IEM. I do appreciate the L shaped plug as well as soft and light cable, but not the current transmission it provide, which seem unstable across frequencies, taming treble and warming slightly boosting mids and lower mids. A good SPC modular cable would have been way more welcome.



Now in term of packaging Letshuoer try to impress the consumer, but it don't really work for me. I prefer smaller package especially when we see this box is 50% fullfill with foam. I mean, presentation is good and professional, but it's not needed.




Apart the cable, the rest of accessories are nice enough. I do like the hard metal carrying case, it feel invincible. The included wide bore silicone eartips are perfect for balanced and open sound, so it's a good choice. You have 3 different model of eartips, 2 silicone model and 1 memory foams model, for a total of 9 eartips pair.

All in all, good packaging and accessories but nothing mind blowing.


THE SOUND IMPRESSIONS




Let's begin by underlining that Letshuoer EJ07M is stated as a monitor IEM perfect for stage musician and audio mastering. And I certainly agree due to the pristine clarity and imaging capacity.
Yet, this doesn't mean it's plain cold sounding or not meant for audiophile enjoyement, high fidelity way and...harman target way. Yes. Another one, but perhaps among the best as well as most underatted harman target IEM out there too.

Why? Because it doesn't lack fast slam, mids aren't plain thin or cold, nor too high or shouty in upper mids and most of all: treble extension go far, thanks to those marvellous EST implementation which permit both low and high end of the 07M to dig deep.

Sure, i would never say these IEM aren't technical sounding, and it's a good thing to be so when it's a tribrid using highs ends driver like a 10mm nano-carbon dynamic driver for fast, clean well rounded and textured bass response free of unwanted resonance or distortion, dual sonion ba for smooth, present , transparent and clearn mids and quad sonio EST for sharp, snappy and sparkly treble with incredibly speedy layering capacity that never miss any percussions info.

So yes technical and near analytical but in a gentle way, you need to go into critical listening mode yourself, it's not forced brightness here, the sound info are delivered in an effortless way which make them easy to read for curious ears, for lazy ear (treble head) the wow effect isn't violent enough perhaps.

I receive these IEM at the same time I was swimming into kilobucks earphones like Hiby Zeta, 64audio U4S-U12T-U18T, UM Mest MK3, Firaudio Xenon 6....and my first though poping up listening for the first time to EJ07M is: they don't feel overpriced and offer a performance that can compare to 500-1000$ IEMs without shame. The tuning is cohesive and refined, the sound is open and dynamic, resolution is crisp and transparent, both tonality and technicalities were very hard to fault, like it happen often with very high end earphones.

But these can be found for 600$ easily.

But all the praise ill give here doesn't mean it will fit your tonal balance ideal and trigger high amount of musicality and emotional response, which I will try to explain further in this review.


This tonality can be summarize as sitting between a crisp but smooth W shape and sparkly U shape with gently brighten mids presence. It's evident sub bass is more boosted than mid bass, yet not to the point of making it lack in slam immediacy and impact.
I would never call the EJ07M as mid centric, yet never consider them lacking vocal presence which isn't recessed or dark at all.
We are in lukewarm territory where its neither too warm or too bright, it's crisp and safe tuning with a twist, an EST twist mostly that permit this extra sharpness in ultra highs.

What the EJ07M don't ''excell'' at is: male vocal, note weight, timbre lushness-thickness-colored naturalness, bass warmth, kick drum roundness and density.

What they do more than well: sub bass extension and control, bass and kick drum presence delimitation, clean clarity and transparency, non blurry mids presence definition, treble attack speed with fast brilliant snap, clean sustain-release, incredible micro details and layering. And imaging. And deep spatiality. And the list can of longer but let's dig deeper in to frequencies range impressions.



THE DEEP AGILE BASS

So let's begin by saying these aren't basshead IEMs yet doesn't lack in slam, rumble and deepest extension down to 20hz. We are into this rare territory where quantity meet quality, with more focus on mid bass presence than physicality and a consequent boost in sub bass section. This is typical for Harman target IEM but this time we have this special ''oomph'' that permit us to forgive the lack of sharp ''thump''.
If you are addict to chunky warm bass that slide into boosted lower mid range, this will feel a bit thin, but if your allergic to muddy warm bass that have too excited rumble loudness, you'll be in for alot of contentment.
The bass is fast and it's resonance is natural and controled, it's the proper sub bass acoustic phenomenon and its stable in it's extension, non distorted, very clean and we have details of the natural air recorded too, so it's well textured and dense with transparent layering.
Separation is excellent, their no bleed or veil into mids, and their just a lean dip in lower mid range that don't create problematic tone imbalance, though affect cello and male vocal fullness.

This isn't the type of bass that add density to the cello body, which do offer full tactile presence without extra warmth layer creaming it's timbre, it's rich in details, the attack is edgy without being harsh or unbalanced in texture and transparency is boosted so we have a perfect layering unlike warmed and more chunky cello with boosted lower mids and fundamental that blur its definition delimitation as well as make macro resolution more muddy, less well, monitor like, thant EJ07M.

Electric bass line, in the other hand, are well bodied with vibrant pure tone release in sub region and snappy delivery of each note attack, this is very appreciate for fast jazz or metal player because the edge isn't blurred. EJ07M doesnt boost too much the electric bass line, yet permit a crisp rendering of them with proper tonefullness and it show how well controlled and speedy is the very good DD driver in these.

We have similar mature yet fully extended delivery of acoustic double bass, which is high fidelity in it's rendering and slight boost so wer'e able to focus and engoy the clean, accurate and well articulate rendering.

Then the kick drum is were I always complaint with Harman target IEM, but here it's not plain flat and dull, nor warmer with unstable acoustic cavity resonance, the presence is clear and we have minimal roundness too it, yet it isn't extremly punchy and in a jazz band the double bass will dominate with it's transparent layering and stole the physical impact focus. This doesn't change the fact EJ07M are master of jazz and instrumental music in general though.

All in all, we have a mature but dynamic and fully extended bass response, clean, well texture and define with excellent separation and transient control.


THE MONITOR-LIKE MID RANGE WITH A MUSICAL TWIST

The mid range is clean, vast, transparent and highly resolved without being harsh or shouty at all. While note the heaviest, note weight is felt, with a fast projection that have abrasive attack lead and beautiful natural resonance.


The piano note hit fast without no sustain exctiment or blur, it's agile and each note have full space to be well define between each other, after the note stroke the release is natural in decay and prolongate in the air, so you'r easily able to perceive sustain pedal when pressed by the pianist, this is a sign of high fidelity refinement to me, which is rare to find in this price range. The piano rendering isn't blurry or diffuse in presence, nor floppy or too warm, not to excited in resononance or unbalance in pitch register, its very realist like in an intimate concert place without amplification, you don't have your head into the piano though, so, some people might prefer an even more intimate and colored rendering, i find it perfect like this within the larger spatiality scale since it doesnt feel overpowered nor too distant, it's a singular part of imaging that listener can monitor without sudden high pitch spike that often happen with badly balance V or W shape balance.


Then, as said earilier the male vocal aren't the thickest nor the most fowards, it's surprising the the presence feel as full and realist though, so in term of layering it's great, it don't mix with the bass but would benefit a bit more lower mids boost.

The female vocal are more present and fowards, they are gently bright and rich in texture details without sibilance or timbral imbalance, they are very center in the stage and well layered, never mixing with other instrument including violin in same pitch. The only 2 things i can fault is that they feel a bit compressed in presence stretching. In the sens vocal projection tend to widen naturally in a larger way, here it doesn't project in fullness, as if a smaller speaker where in middle of 2 larger stereo speakers. In that sens, it make them a bit dry too, and yes, thin, but there a density rigity to them too.

The saxophone will be treated the same as female vocal, clean and well layered, easy to track and speedy when nedeed, but not fully embracing the listener nor trigger high emotional response (subjective).

Then, the violin is marvelously agile in it's attack with an abrasive edge to it's attack that isn't noisy nor harsh, but energic and controlled even in fastest passage. The level of micro details in texture is very impressive since it's bright tonality isn't spiky. It's very well delimited in presence definition, highly transparent without being too liquid or polished, and the release resonance is realist, not too scooped and not blurred with harmonic distortion euphony. This make this easy to follow vivaccisimo of Hilary Hahn prodigious playing.

These are very technical and mature mid range, which sound open and vastly informative in sound info but not very colored or boosted in fundamental, so you will not get extra body and breathyness in vocal, nor extra lushness in violin playing which can slow the pace perception in fact. We aren't in ''romantic'' or warm mid range, yet it's smooth in it's tonal curve and lively in a light but vivid dynamic.

THE SNAPPY TREBLE DELICACY

As you will see in comparison part against Hiby Zeta, the treble as nothing to envy to kilobucks IEM and is for me the big highlight even if both bass and mids are extremely refined and capable technicality too.
In fact, while i own 5 IEMs with EST driver, i did have listen for a month to Mangird Xenn Up, Fir Audio Xenon6 and GSaudio SE12 too. Their no doubt for me that EJ07M is superior to all of those apart Zeta, which they are near identical in performance and quality.

To disgress a little more, I would add that I share thoughs about EST alot with Chifi Love members including HiFri who make and tune IEMs for more than a year. It firstly was about my sincere confusion that some people can't hear EST benefit, or find it not lively enough. I guess those people are hardcore treble head that like to have big upper treble boost so micro details pop up violentaly at you, for these people GSaudio SE12 will be the answer but for those seeking effortles details rendering that don't sound imbalanced and do consider that as a sign as tuning refinement: the EJ07M treble will sound magnificently crisp, extended, and natural enough in a rather smooth balance.

Now if you like to pick up every texture nuance and details of instrument, the 07M will impress you. The drum brush is render in all its texture complexity, the cymbals crash have sizzle richness and well resolved decay that never go splashy and are even soft in dynamic, the hit hat deliver all it's speed and snap effortlessly as well as all other percussions, with inimitable realism of their metallic tone.

But this isn't deliver in an agressive way as noted above, the EST aren't screamy drivers, and some might find this cymbals crash lacking energy projection for agressive music like metal or rock, we know it can be both part of headbanging experience but prompt to harshness and ears fatigue, so for me I prefer safe yet crisp and highligy informative treble like the one of 07M that never fatigue me even after 8H straight up of listen at moderatly high volume.

While bright in a very crisp way, the highs might lack a bit of abrasive bite for fans of electric guitar, i find it to do better with acoustic guitar, harp an clavichord. Electric guitar tend to benefit a bit of euphonic brightness to densify it's presentation and here the rendering is a bit flat, transparency being more focus than high harmonic sustain and fuzzyness.

So these highs are airy, gently sharp in micro and macro resolution with an incredible layering capacity that extract micro details and percussion. The speed is intense but don't feel out of macro timing, sure we have an extra EST layering as say, but since it's not too loud it doesn't feel out of phase, just add an extra dimension to a rich musicality.

It's delicate in rendering, so clavichord playing will be a bit light in impact but fully resolved and extended in higher harmonic release, delivering long decay with short and fast sustain that don't warm the micro resolution. Harp attack release too can go ultra speedy, and can bypass the lower harmonic density and resonance. This is both highly accurate and precise in attack timing, and the glittering never feel dirty or too excited. In term of upper treble, i didn't hear as sparkly yet non fatiguing treble from any sub-700$ IEMs yet.
Yes, it's that good to my very capricious ears. And it's the treble I wish Mangird Xenn Up deliver, i guess the secret is having 4EST instead of 2 here.


THE EXEMPLARY SPATIALITY AND IMAGING

The soundstage doesn't sound stock in your head, its wider and deeper than taller, the depth is clean and not obscured by sound layers euphonic opacity. You can travel in a holographic but slightly centered spatiality. The clean clarity magnify sens of air and separation.

The imaging is certainly another highlight of these, which is logical if aimed for monitoring. This is how we know we have an excellent mid tier IEM. Sens of perception is magnify due to transparent sound layering that are easy to separate in Y axis while instrument separation space in X axis is clean and instrument definition is edgy enough in delimitation. As well, EST tend to make layering sharper for percussions too, so nothing is lost in the mix .

THE SIDE NOTES

At 19ohm of impedance and 107db sensitivity, the EJ07M aren't that hard to drive but do scale up with good amping that have lower than 2ohm of output impedance and clean black background floor.
I didn't find exact need these IEM ask, but they seem capricious about source. EST make them pick up hiss background easily with very noisy source and high impedance output can make macro resolution more mushy and even distort or warm bass boom. But it's not very problematic and I get great result with alot of source like Questyle M15 (excellent match) and QP2R, Moondrop Dawn 4.4 (excellent match), Hiby R6pro2 (meh, too soft in dynamic rendering, lack bass impact), SMSL SU9+SH9 (very clean and detailed but lack dynamic heft especially in bass again), Hidizs S9pro (sub bass roll off, some euphony is going on, meh).

I consider those cable sensitive too, and stock one don't do them justice and tame upper treble crispness-brilliance, one of highlight of 07M, my face cable is Tri Grace S with them. It's evident that stock cable ask for upgrade to scale up in transient performance.

The nozzle being very shore and wide, these aren't thinked for deep fit. Stock eartips are right, and i use the short wide bore which is very similar to KBear KB07 silicone eartips and permit proper dynamic balance and spatial openess.




THE COMPARISONS



VS PENON 10th Anniversary (2DD+2BA+2EST-500$)

What hit first is how taller and bigger is the spatiality as well as more holographic and tactile in instrument rendering. As well, it feel more colored and lusher tha EJ07.
So, we can say it's a more dynamic and warmer W shape signature.

The bass is chunkier, warmer and more punchy, there more mid bass boost than EJ07 and more lower mids too so male vocal sound fuller as well as more fowards, less lean and dry in rendering, but sub bass extension isn't as clean and deep.
Timbre wise, i do prefer more colored and thicken rendering of Penon, it's lusher and it tend to deliver wider creamier vocal presence than more centered and compressed mids of EJ07, but overall resolution is notably darker and less transparent, it can't be use for monitoring unlike EJ07.
Then the treble isn't as extended and full in sound info, its thicker, more colored and less lean, it doesn't pick up whole percussions layers as the EJ07 and feel less clean.

Soundstage is notably wider taller but less deep and more densify in sound layers euphony, making macro perception less readable.
This mean your perhaps more in middle of music, but that positionning is notably inferior to EJ07, it's less define in separation, we have more bass blur stickening instrument separation, and the layering is more opaque, which explain we can't travel very deep in spatiality in term of critical positioning.

All in all, the Penon is more fun and musical to listen and get lost in, but technical perfomance is notably superior, more refined and controlled with the EJ07M. Very different sound flavor....and purpose here.

VS KINERA URD (2DD+1BA+2EST-650$)

The Urd offer a darker, warmer and bassier U shape tonality, underlining the more W shape and crisper balance of EJ07M.

The bass is slower but weightier and warmer, with more bass bleed into lower mids, less well define and texture presence and overall more muddy and roll off extension, its very difficult properly following bass line with the Urd.
Then the mids are thicker, but darker and more recessed, apart male vocal that are fuller and more fowards the female vocal are leaner, less define in presence but smoother and more relaxed, overall resolution feel more foggy and hide more sound info the crisper and more freely open mids of EJ07M.
The treble follow similar rendering, it's notably darker and less resolved and its harder to find ESTs benefit but we have 2 instead of 4 than the more snappy, extended, sparklier and cleaner highs of EJ07M.
Spatiality is wider but even less deep than Penon, so it feel quite one dimension compared to deeper airier EJ.
Imaging don't even worth talking about, it's from another league with the EJ, way way more mushy and abstract with the Urd.

All in all, the Urd just can't compete both technicaly and tonaly since it's so colored compared to the EJ07M, i feel like i'm deaf with the Urd after listening for hours to more neutral, clean, detailed and multi layered mature musicality of EJ07M.

VS HIBY ZETA (1DD+4BA+4EST-1300$)

The Zeta is like a more V shape EJ07M on amphetamine both in term of bass and upper treble boost.

So, it's notably less neutral, but less clean too due to mod mid bass warmth into lower mid range.
This bass is more muddy, more boomy in extension so double bass will feel hooked to an amplifier with lotta problematic resonance warmth. Its heftier and punchier, in a whole package way so even if we have more mid bass, the kick drum is less well define and present, its more swallow by boom weight and density.
The mids are nore as crisp, clean and open, but they are thicker in timbre, male vocal are again fuller, slightly less textured, instrument have more note weigth but less edgy definition, female vocal are more breathy and euphonic but not as well extracted and separated in center stage.

And now the treble is so similar that i'm a bit puzzled. We most note both these IEM use quad sonion EST so both excell in percussions layering, at picking up micro details cleanly and effortlessly, at adding this snappy brilliant edge to attack...really, they are 100% on part at least upper treble wise. If i go lower than 8khz, Zeta will infact feel a bit darker.
EJ07M have fuller treble presence and fowardness, which make female vocal and violin more upfront, slightly fuller in harmonic, but in a leaner smoother way. So we can say treble is more polished and organic with EJ will slightly more abrasive and edgy with the Zeta, but less well balanced too due to warmer mid range that stole a bit of macro clarity.

Spatiality is this time very similar, perhaps a hint wider due to extra bass headroom but when the slam don't widen dynamic effect, it's about the same and again EJ07M can go deeper with a less warmed center stage.

Imaging is more accurate, monitor like with EJ too, especially low and mid range wise were clarity is cleaner for proper position and layering.

All in all, hum, the conclusion here is a bit similar than the one with Penon 10th, i the sens the musicality is more fun and colored, with very similar treble performance and muddier bass than EJ07M, which we can say sound a bit colder, leaner, more neutral, but this comparison underline how refined is the tuning and how impressive are technical performance for its price range too.
Ok, ill say it: EJ07M are superior technically even if it use 2 BAs less for mid range and lower treble.

CONCLUSION



I think it's evident I have a big love affair going on with the EJ07M and i'm the first to be surprise about this. WHy? Because i'm rarely a fan of harman tuned IEM, the only other exception is Mangird Xenn Up which share some similarities with these.

It's rare that i need to underline the good sound value of an IEM of this price, but this is due to great experience with tribrid and pricier IEM in general that offer inferior technical performance and less cohesive tuning. This is even more surprising because these tribrid are 2 years old yet still very competitive due to the well implemented quad sonion EST they use.

This treble is the star of the show, yet not in a rough immature in-your-face manner, and this explain why you can still be surprise by it after 100H of use like I do. The micro details it pick up aren't dominating whole spectrum, yet have special protected space just for them that make the curious listener able to choose if he want to hear those or not.

Simply put, Letshuoer achieve with the EJ07M something exceptional: making a monitor earphones that is both a great performing tool and high fidelity audiophile musicality master.

If you like your music to be restitute smoothly, but crisply with excellent resolution-imaging, clean airy spatiality, and a fun fast slam to add dynamic engagement, you can't go wrong with the EJ07M.

Highly Recommended!!!!







----------------------------


PS: I want to thanks Letshuoer for sending me this review sample after i manifest my interest about it. This interest was trigger by the SPL graph i've seen of those, as well as solid recommendation from reviewers and audiophile (non hyper) I respect. As always, these are my savagely independent audio impressions and opinions and I don't care what people will think about it.


You can order the EJ07M for 650$ directly from official Letshuoer website here:
https://letshuoer.net/products/ej07m-best-in-ear-monitors-for-singers-drummers-studio


For more diversified review, you can give a look at my No Borders Audiophile website, or join ChiFi Love facebook group.

INTRODUCTION:​

Hey there, fellow audiophiles! It's time to dive into another Letshuoer creation – the EJ07M. If you remember, I had my ears on the S12 OG not too long ago, and it left quite an impression. But now, it's the EJ07M's turn to shine under the audiophile microscope.

Big shoutout to my buddy @Zerstorer_GOhren for letting me borrow his EJ07M for a spin. He's been raving about it, so I just had to get my hands on this midrange marvel. Priced at $650, it's not your run-of-the-mill audio gear – this is where the serious hobbyists start to play. So, the million-dollar question: can the EJ07M deliver that flagship experience without the wallet-crippling price tag? Let's jump right in and find out together!

FOREWORD:​

• The gear on hand has undergone at least 10-15 hours of use before it was assessed.
• No EQ is ever applied in my reviews.
• For the sake of convenience, I try my best to use a stock setup. Not everyone has access to personal ear tips or cables. If personal ear tips, cables, or accessories are used, you will be notified.
• As I try to be objective, my claims inevitably will be subjective and biased to my personal preference. I cannot stress more that you should take this with a grain of salt for we have different perceptions to sound and what we hear.

SPECIFICATIONS:​

Brand: Letshuoer
Model: EJ07M
Impedance: 19 ohms
Sensitivity: 107db
Frequency response: 20hz-30khz
Pin type: 2 pin, 0.78mm connectors
Termination: 3.5mm single ended
Driver configuration: 4 x Sonion EST65QB02 electrostatic drivers, 2 x Sonion 2389 balanced armature mid woofer drivers, 1 x dynamic driver

PACKAGING:​

The EJ07M arrives in a medium-sized box that oddly resembles a cereal box – talk about breakfast for your ears! This unassuming packaging, decked out in a clean white hue, proudly showcases a front-and-center snapshot of the EJ07M itself. Instantly, a sense of professionalism radiates from the box – it's almost like it's saying, "Hey, musician, I've got your back!"

But hold on, let's not gloss over the goodies within just yet. Oh no, my friend, these inclusions deserve a moment in the spotlight, and I'm here to make sure they get it. So, buckle up as we dive into what's in the treasure trove!

Protective case​

Ah, the case – the trusty guardian of our precious auditory gems. This one's a screw-type affair, locking your beloved IEMs away in a fortress of safety and sound. Dressed in sleek black, it exudes a minimalistic charm that's oh-so-elegant, but I couldn't help but wonder if it might be a magnet for those pesky scratches. Careful handling was the name of the game – I couldn't bear to upset my buddy Eiji with any unsightly blemishes.

Now, let's talk space. The case isn't playing any cramped games – there's room to spare in there. The EJ07Ms get to stretch their legs (figuratively speaking, of course), and there's even some padding in there to ensure no metal-on-metal shenanigans with your precious cargo. A minimalistic design, just the way I like it. But, brace yourself, my friend – the screw-type mechanism does demand a bit more of your time to open and close. A small sacrifice, perhaps, in exchange for the fortress-like protection it offers.

Eartips:​

Ah, the ear tip adventure – a crucial quest for that perfect auditory embrace. In Letshuoer's corner, we're met with a dynamic duo of ear tip options. First, a narrow bore contender – firm and unyielding, seemingly primed for bolstering those bass frequencies. Then comes the grayish knight, wielding a softness that's almost legendary. Its wide bore stance hints at a vocal-centric strategy.

Now, here's where the plot takes a twist. Yours truly, the curious audiophile, opted to venture off the beaten path. The stock tips didn't quite tickle my sonic fancy, you see. Early spoiler alert: my heart belonged to my trusty Dunu SnS tips. You see, the narrow bore was a little too gung-ho on the bass boost for my liking. On the flip side, the wide bore was all about the details, but at the cost of a softened bass impact.

So, what's a discerning listener to do? I embarked on a quest to find that sweet spot – a tip that danced harmoniously between these two worlds. And lo and behold, the stars aligned, and I found my ideal match in those aforementioned personal tips. The moral of the story? Sometimes, the quest for auditory nirvana is all about striking that delicate balance.

Ah, almost slipped my mind! For those who find their groove with foam tips, Letshuoer's got you covered too. Now, I must confess, I'm a dyed-in-the-wool silicone eartip enthusiast. Foam's allure may be lost on me, but credit where it's due – Letshuoer's inclusion of foam tips is a nod to the diverse tapestry of preferences out there. So, kudos to them for embracing the foam aficionados among us. Your auditory journey, your rules – whether you're Team Silicone or Team Foam, Letshuoer has thoughtfully laid the groundwork for your sonic escapades.

Cable​

Let's dive right into it – the cable caught my eye with its sleek and slender profile. Now, don't get me wrong, this isn't necessarily a bad thing. In fact, it comes with some nifty perks. It's like a feather, easy to tote around, won't drag your ears down, and has the flexibility to keep up with your every move. The cable's slim demeanor didn't exactly keep me up at night, though I must confess, I might be a tad biased here. It's all about preference, right? The cable's quality is seriously top-tier, and that bronze hue? It practically screams sophistication.

But wait, there's more! The pin connectors and termination – they've got this cool transparent design that lets you peer into the inner workings, adding a bit of visual flair. The build is solid, sturdy, and up for whatever you throw its way. And let's not forget about the material – it's rocking high-purity OCC copper, which, for the cable connoisseurs out there, brings a dash of warmth to the table. A match made in cable heaven with the EJ07M's overall sound, which we'll chat about soon.

All in all, the cable is quite the looker, easy to carry around, and, if I'm nitpicking, just a smidge on the thin side. But hey, that's just me – I've got a thing for cables that pack a little extra girth. Your mileage may vary!

The pre-determined ear hooks though, has this stiff feel to it, and can invoke a sense of uncomfortability at times. But I’ll be able to live with it. Just another nitpick of mine.

Appearance​

Alright, let's talk design – the EJ07M's got a touch of déjà vu, reminding me of its cousin, the S12. It's got that metallic vibe going on, but don't let that fool you into thinking it's a heavyweight. Nope, these babies sport curves that not only look good but play nice with your ears' comfort.

Now, let's address the faceplate – and oh boy, it's a carnival of colors. Imagine red, blue, white, and orange having a party, and you're invited. The design dances on the edge of being a swirl without totally committing, which adds a refreshing twist. Plus, major props for skipping the traditional resin look – they've gone rogue in the best way possible.

But hang on, we're not done. The base keeps it simple, rocking a clean silver look without any bells and whistles. Those little vent holes? Yeah, they're there to keep ear pressure in check, so your listening sessions stay comfy.

Now, I gotta level with you – the design didn't exactly make me do a double take with a resounding "wow." But hey, that's just me and my style preference – maybe I'm secretly pining for a bit more flex. You know how it is!

COMFORT:​

Alright, let's get real – when it comes to comfort, the EJ07M gives it a fair shot, but it's not exactly my ears' soulmate. Surprisingly, it's not the weight that's the issue – I can handle that just fine. Even the curves play nice with my ears, no problem there. But you know who's the troublemaker? Those ear hooks. They've got a beef with my marathon listening sessions, and I'm not loving it.

Don't get me wrong, the fit is pretty good overall, but here's the catch – finding that sweet spot for a perfect seal is a bit like trying to solve a Rubik's Cube in the dark. Now, let me be clear, this is just my personal take, not an engraved-in-stone truth. We all know ears come in all shapes and sizes, and this is just how the cookie crumbled for me.

But hey, don't let my ear-drama discourage you. Maybe these babies will snuggle up just right with your ears and become the ultimate comfy companions. Fingers crossed!

SOUND IMPRESSIONS:​

Hats off to you for making it here! Now let's dive into the juicier bits – the sound.

The EJ07M joined forces primarily with my trusty Fiio M11 plus LTD dap, and I put it through its paces with my go-to dongles: the Centrance Dacport HD and the Ovidius B1. Not stopping there, I teamed them up with my powerhouse amp, the Fiio K9. While I stuck with the stock cable, I waved goodbye to the stock tips and opted for my own Dunu SnS tips for that extra oomph. Time to groove into the auditory adventure!

Let's unravel the soundstage magic! Brace yourself, it's not that bold, upfront stage that's going to smack you in the ears. But fear not, there's enough breathing space in there – it's not cramped quarters. Picture this: it's like a well-proportioned room, but not the grand ballroom type. We're talking depth and height here, but the holographic flair, the 3D fireworks – those are slightly reserved.

Now, let's face it – we're in IEM territory, not the sprawling expanse of speakers or headphones. So, yes, we're in a bit of a 2D realm. Yet, here's the twist: it doesn't get claustrophobic, not even a hint of it. The EJ07M strikes an artful balance between cozy and wide, pulling you into its sonic universe with just the right dose of intimacy and room to stretch.

Hold on tight, because we're diving into the world of sonic imagery, and boy, is it a showstopper. Imagine this: elements darting around, each with its unique spot on the stage. You might just catch yourself raising an eyebrow – "Wait, where did that instrument sneak in from?" Yep, it's a bit like a musical game of hide and seek.

Now, picture this: synths and guitars with those mesmerizing arpeggios, taking their graceful bows at different corners of the stage. It's like watching a carefully choreographed dance of sound. And when the instruments decide to play musical chairs and swap positions, it's not a puzzle, it's a joyride.

Here's the kicker – it's not a mere coincidence. This level of precision is a nod to the big league, the TOTL club. So, buckle up, because the EJ07M is rolling out the red carpet of imaging sophistication, giving you a front-row seat to a symphony of sonic placement that's nothing short of remarkable.

Timbre, is walking a fine line here – teetering between decent and downright delightful. Now, don't get me wrong, it's not winning any "Most Organic" awards, but it's still got its charms. We're talking about a performance that's 95% pure natural goodness, with just a touch of the artificial sprinkled in for variety. It's like having a conversation with a friend who's 95% insightful and 5% pulling your leg – you're still hanging on their every word. So, while it might not be the ultimate timbre guru, it's certainly making the timbral journey a fascinating and mostly authentic ride.

We've got some speed here that's as sly as a fox but not so fast it leaves your ears spinning. This is a Goldilocks situation – not too slow, not too speedy, just the right amount of oomph to keep those musical notes dancing with authenticity. And when it comes to note definition, we're walking the line between "Where's Waldo" and "In Your Face." It's like a perfectly executed tightrope act, striking that balance between edge and smoothness, and leaving your auditory senses both thrilled and soothed.

Hold your audiophile magnifying glass, because we're diving into a treasure trove of details that'll make your musical journey an enchanting adventure. The EJ07M has a knack for picking up those minuscule sonic gems – the kind that usually hide behind the curtains – and bringing them to the forefront of your auditory stage. You'll be tapping your foot and nodding your head in musical ecstasy as those micro nuances step into the spotlight, adding that sprinkle of magic that audio aficionados can truly appreciate. It's like finding those hidden Easter eggs in your favorite movie – not too obvious, but oh-so-satisfying when you discover them.

The EJ07M wields separation skills that could make a conductor jealous, ensuring that every note, every instrument, and every nuance holds its distinct place in the musical masterpiece. It's like having a front-row seat at a live concert, where each musician has their spotlight moment, contributing their unique flavor to the harmonious blend. And guess what? No instrument gets lost in the crowd – that's right, at least 90% of the time.

BASS​

The EJ07M introduces a sound profile that's as flat as a calm lake, embracing neutrality with open arms. While some might consider this a touch clinical, for me, it's a necessary canvas for my musical endeavors – a palette where every brushstroke of sound remains faithful to its true hue. And let's not forget, it's a haven for those who seek respite from the colors of audio extravagance.

What's truly captivating here is the bass's modesty. It graciously steps back to let other elements shine, unveiling a treasure trove of intricate details that might have otherwise remained hidden. The micro nuances of an acoustic bass are woven seamlessly, displaying a mastery that doesn't waver even when faced with the most demanding tracks. But before you mark it off as too reserved, know this – the bass's punchy and tight nature ensures that it's no shrinking violet.

Yet, if you're on the hunt for bass that shakes your very core, EJ07M might encourage you to explore elsewhere. This isn't a set for the bass-hungry, and that's a deliberate choice. Bass guitar and drum kicks are harmonious dance partners, each taking their turn gracefully without stepping on each other's toes. And while the bass's precision and grip might be commendable, it doesn't chase after the adrenaline of pure enjoyment.

Now, here's the twist – grand orchestral renditions, where bass swells in all its glory, might be a bit of a stretch for EJ07M. In the grand orchestra of sound, it's the details and the surgeon's precision that this IEM leans into, perhaps leaving a few decibels of the fun factor at the door. But remember, every IEM has its strengths and preferences, and for the EJ07M, that preference leans towards the analytical embrace of clarity.

MIDRANGE:​

Let's delve into the heart of sound, where details, definition, and texture intertwine to create the mesmerizing midrange of the EJ07M. This isn't a midrange that shouts from the rooftops, but rather a subtle whisper that draws you into its intricate tapestry. If you're accustomed to a more flamboyant sonic palette, you might initially find the midrange a tad thin. Yet, for those who crave neutrality, this is a sanctuary of sonic purity.

In this realm, pianos may lose a touch of their lushness, yet what they relinquish in warmth, they gain in precision. The midrange's positioning waltzes with the track's requirements, seldom retreating to the shadows. Vocals adopt a leaner posture, allowing details to steal the limelight once again. And here's the twist – the EJ07M shares a secret affinity with guitars. Strumming along with John Mayer, it crafts an ethereal aura, while the crunchy, gritty riffs of Rage Against the Machine are etched with striking clarity. It's no surprise that rock genres find a cozy home here.

If I were to paint my sonic dream, I'd infuse a tad more body and density into this midrange. But alas, preferences are as unique as fingerprints. And for those who seek the unrivaled embrace of details and crave an analytical companionship, the EJ07M has your name written all over it.

TREBLE:​

Snappiness, crispness, and a dash of bite create a harmonious symphony in the EJ07M. Cymbals dance with an infectious liveliness, infusing each note with boundless energy. Yet, it's the brass section that truly steals the spotlight, a personal delight for me, being a saxophonist myself. When Tower of Power and Earth, Wind, and Fire took the stage, their performances brimmed with vibrant vitality.

But here's the enchantment – the treble's magic never tips into the treacherous land of sibilance. It maintains its poised balance, always toeing the line without stepping over. Although, a word of caution to those with ears more sensitive – this energy might border on excessive for your taste.

A nod to the 4 electrostatic drivers seamlessly woven into this soundscape. They reveal a tapestry of details that will make any detail aficionado's heart sing. If you're one who thrives on discovering every nuance, every whisper of sound, then EJ07M's treble is a playground of auditory delight awaiting your exploration.

COMPARISONS:
**Versus Softears Studio 4**

Alright, let’s roll up our sleeves and dive into some comparisons. First up, let’s chat about the showdown between the EJ07M and the Softears Studio 4.

In terms of tonality, Studio 4 strides in with a lush and rich sound that just wraps around you like a warm embrace. But here’s the twist - where Studio 4 takes a backseat, nursing a bit of a treble slump, EJ07M unfurls its treble magic thanks to those EST drivers. The EJ07M also flexes its muscles in the bass department, delivering a tasteful dose of tactility that Studio 4 might envy a bit. When it comes to vocals, Studio 4 sways you with its engaging, soulful croons, while EJ07M prefers to strut its stuff with a precision dance.

Ultimately, both of these champs lean toward a neutral tuning, but Studio 4’s like your kind-hearted friend, offering a gentler take, while EJ07M stands tall as the ruler of precision and definition.

**Versus Dunu SA6 Mk2**

Remember when we chatted about the SA6 Mk2? Well, turns out that SA6 and Studio 4 could be cousins. So, putting EJ07M under the spotlight for comparison feels a bit like déjà vu. But hey, let’s do it anyway!

Now, SA6 takes the midrange crown in its own kingdom, flaunting a tonality that’s dense and sumptuously bodied. This makes EJ07M sound kinda svelte in comparison. On the flip side, EJ07M isn't pulling any punches. It steps up to the plate with separation, imaging, details, speed, and resolution that’d make any audiophile weak in the knees. It’s like the nimble-footed boxer taking on the heavyweight - EJ07M dances around SA6, impressing with its lightning-quick punches.

**Versus Hidizs MS5**

MS5 steps up to the challenge with its holographic prowess, projecting an image that might just make you question reality. But wait, EJ07M doesn't flinch. It might not be holographic, but it's got a 2D stage that you can still run wild in. Now, where EJ07M sweeps the floor is in the tonality and timbre department. It's like serving a gourmet meal compared to MS5’s fast-food frenzy. The details, separation, speed, resolution - EJ07M nails them all with precision. And that's not even the end of the story. The MS5 has a spicy kick in the treble department, and sometimes it’s a bit too fiery
for its own good.

TEST TRACKS:​

Here are some tracks I usually listen to when reviewing:

That’s the way of the World by EWF
Africa by TOTO
The Girl in the Other Room by Diana Kral
Balmorhea album All is wild, All is Silent
Sila by Sud
Smooth Escape by D’Sound
Never too Much by Luther Vandross
P.Y.T by Michael Jackson
Ain’t no Sunshine by Eva Cassidy
Shoot to Thrill by AC/DC
Another one bites the Dust by Queen
Good times bad times by Edie Brickell
Alice in Wonderland by Bill Evans
Ain’t it Fun by Paramore
Redefine by Incubus
Far Away by Nickelback
Lovesong by Adele
Lingus by Snarky Puppy
Harvest for the World by Vanessa Williams
Love Bites by Def Leppard
No Such Thing by John Mayer
As by Stevie Wonder
Whip Appeal by Babyface
Ain’t Nobody by Chaka Khan
Futures by Prep
Landslide by Fleetwood Mac
Every Summertime by NIKI
SADE tracks
AC/DC tracks
Queen tracks


And many more… I always listen to High resolution format, being the least quality 16bit/44khz FLACS be it offline or online.

VERDICT:​

The EJ07M, a name that might sound like it belongs in the futuristic world of Star Wars androids, but in reality, it's a mature and sophisticated IEM that places its bets on details, texture, imaging, resolution, and separation rather than opting for the lush, rich, and dense tonality. If you're one who savors an analytical sound profile, consider your sonic cravings met – the EJ07M has your name etched on it. Its drivers are orchestrated with such finesse that coherence reigns supreme.

As we ascend the ladder into the realm of TOTL (Top of the Line) audio, a recurring theme emerges – a penchant for this kind of sound profile. Now, don't get me wrong, TOTL doesn't exclusively lean towards technical prowess; some wear the crown of bass-heavy marvels. Yet, for the EJ07M, the spotlight is undoubtedly on the technical marvels. Think of it as the go-to companion for mixing engineers, a trusty stage monitor for musicians, and a loyal partner for vocalists who demand precision and spot-on execution of their craft.

Sure, the EJ07M possesses heart and soul, but it's wired more like a genius than a dreamer. Personal preferences sometimes whisper for a thicker, richer sound, yet the symphony of technicalities orchestrated here compensates gracefully. And when the final notes settle, it's tempting to bestow upon the EJ07M a clandestine title – a TOTL in disguise, cloaked in a price tag below a grand.

A heartfelt nod of appreciation to Eiji and Letshuoer for their graciousness in letting me tango with this marvel, even if for a fleeting moment.

Thank you for embarking on this sonic journey with me. Until our next musical escapade, cheers!