LETSHUOER S15

DISCLAIMER:

I want to extend my gratitude to Letshuoer for providing me with their third-generation planar earphone, the Letshuoer S15, for an honest review. This remarkable unit was sent to me as part of a review tour with my audio enthusiast group. Please note that all opinions expressed here are entirely my own, and I have not received any financial compensation for this review. While I don't claim to be an audio expert, as an avid music enthusiast, I hope my experiences and insights can offer a valuable perspective. I encourage you to audition the product yourself to see how it aligns with your preferences.

INTRO:

This is my first encounter with the Letshouer brand being a neophyte in this hobby for no more than a year. Letshouer is a brand founded by fellow veteran audiophiles on 2016. They seek for the ultimate natural listening experience for audiophiles and constantly finding ways to innovate and discover sonic materials to give the end-user musical satisfaction.

SPECS:

• Third Generation14.8mm Planar Driver + 6mm R-Sonic Passive Filtering Module
• New Acoustic Structure, A Sound Quality Powerhouse
• Dual Acoustic Tubes With Filter Crossover
• Smooth Transitions Across The Spectrum And Rich Sound Layering
• High-precision 3D-printed Front Cavity
• CNC Precision Carved Aluminum Alloy Panel
• Lightweight Ergonomic Design, Fine And Delicate Touch
• 216-strands Silver-plated Monocrystalline Copper Cable
• Detachable 2.5mm, 3.5mm, 4.4mm 90-degree Angle Connectors
• 0.78mm Dual-pin receptacle
• Practical Accessories
• Every detail is implemented to contribute to the sound quality.

UNBOXING PHOTOS:







What's inside the box:

• 2 x S15 Earphone
• 1 x Cable
• 3 x Connector
• 2 x Types Ear tips (3 sizes each)
• 1 x Storage Box
• 1 x Instruction Sheet
• 1 x Warranty Card

The Letshuoer S15 is packaged in a neatly compartmentalized box like a jewelry box. All items are neatly arranged in their own slots. Their selection of color palette of powder blue and light gray, radiates calmness to the eyes. They included a high quality modular cable with L-shaped connectors, a big plus for me. You’ll also receive a rubberized plastic round container to store and protect your IEMs, cable, and ear tips. However, it is prone to fingerprints, so keep that in mind.

The Letshuoer S15 packaging may not reach the level of high-end brands, but it certainly leaves a lasting impression of quality and sophistication. Overall, Letshuoer has put considerable effort into providing a complete package that caters to audiophiles seeking both outstanding sound performance and an aesthetically pleasing experience.

BUILD AND DESIGN:

The S15 features a sleek 3D-printed resin shell with a smooth finish that exudes a subtle rubbery texture. Its thin, anodized silver aluminum faceplate adds a touch of sophistication, beautifully complementing the powdery blue shell. The faceplate design evokes imagery of a majestic whale or a sleek shark, reminiscent of the ocean’s depths. In terms of build quality, the S15 feels remarkably lightweight yet solid, very comfortable to my ears, making it an ideal choice for extended listening sessions.



The technology employed in the S15 is Letshouer’s in-house R-Sonic Dynamic Harmonic Technology. Its basic idea is that to produce excellent sound reproduction, it must be first non-fatiguing and pleasant before setting the stage of introducing more details and technicalities in sound. You can read more here https://letshuoer.net/blogs/news/letshuoer-r-sonic-dynamic-harmonics if you wish to know about the details of this technology. Together with their 14.8mm third generation dual chamber planar driver and dual acoustic tubes with filter crossover, expect a broad sound stage, excellent transient response, and accurate sound reproduction, all with sonic balance.



SOUND QUALITY:

Sound Signature: neutral with a hint of warmness in the lower midrange & mid-bass

Bass: controlled and punchy / above average speed and texture for a planar driver / decay is quick as expected

Midrange: has a rich and smooth midrange, not that detailed and transparent / vocals are forward and upfront / male & female voices sound natural and intimate / more musical than analytical

Treble: the highs lacks air and sparkle but are detailed enough to enjoy / non-fatiguing treble and no harshness or sibilance even at high volume / one can certainly listen with it the entire day

Soundstage & Imaging: wide and accurate / instrument separation is great, one can pinpoint where the instruments are playing and coming from

Detail & Clarity: detailed and smooth enough to hear nuances but not analytical sounding

Dynamics: above average dynamics and transient response / tone and timbre are delivered well

Sensitivity: with its 30 ohms impedance, you’ll unlock the S15 to its full potential at medium to high volume / most planar drivers are quite harder to drive versus the easy dynamic drivers

Resolution: not analytical in any way, emphasizes musicality more than very crisp details

Fatigue & Comfort: no pressure points in the ear / lightweight IEM you'll forget you're wearing them / can listen to music with it all-day long

Value: at $309 plus free shipping, this planar IEM positions itself at the midrange market, its price is justified with the included accessories that came with it, but wish they could have priced it a little bit lower

COMPARISON WITH HIDIZS MP145

Can only compare the Letshouer S15 with the Hidizs MP145 since that’s the only planar IEM accessible to me. It’s also one of the popular single planar IEMs among audiophiles with its sweet sounding sound. Comparing the two reveals some distinct characteristics and strengths for each IEM.



Bass:



Midrange:



Treble:



Soundstage & Imaging:



Detail and Clarity:


Fit and Comfort:


Finish and Price:



The Hidizs MP145 is ideal for analytical lovers and those who enjoy extra brightness in the treble, with its expansive soundstage and high level of detail making it great for immersive listening. In contrast, the Letshuoer S15 is suited for listeners who prefer a more balanced and natural sound signature, featuring neutral bass, a forward midrange, and smooth treble, making it versatile for various genres and detailed listening.

Ultimately, the choice between the two will depend on your personal preferences for sound signature and the type of music you enjoy.

CONCLUSION:


I found the Letshuoer S15 to be a standout product. The S15’s build quality is sleek and sophisticated, with a powdery blue resin shell and anodized silver aluminum faceplate. In terms of sound quality, the S15 has a neutral signature with a hint of warmth in the lower midrange and mid-bass. The bass is controlled and punchy, the midrange is rich and smooth, and the treble is detailed but non-fatiguing. The soundstage is wide and accurate, with excellent instrument separation and smooth detail. If you want an IEM that you want to enjoy listening to for extended periods of time and just there to enjoy the music without overly critical, then the Letshouer S15 fits the bill.

HIGHLY RECOMMENDED

Equipment used for evaluation:

• Topping DX3 Pro Desktop DAC/Amp
• Shanling UA4 DAC/Amp Dongle
• Hifiman HE400SE Headphone
• Tanchjim Zero IEM
• Simgot EA500LM IEM
• Hidizs MP145

Official Website: https://letshuoer.net/products/lets...ve-filtering-module-hifi-wired-in-ear-monitor

NOTES and DISCLAIMERS

• Just your regular music lover trying on different audio gears to see how music can be enjoyed more.

• Thank you for Sir Eiji Romero and Sir Jay Infante for supervising the LETSHUOER tour in Iloilo. Thank you for the opportunity.

• I did not gain any form of incentives from this review and all stated here are my opinions of the set, as this hobby is subjective and may have varying results.

SOURCES, GEARS and SOFTWARES

Hiby R8 II
Hidisz S9 PRO Plus
Fiio KA13
iPhone 15 PRO
Apple Music
Musicbee
Native Flac Files (16 bit - 24 bit)

All my listening was done with Tangzu Sancai Balanced Ear tips.

BUILD, COMFORT AND DESIGN

What’s in the box?
The IEM
Two sets of eartips (balanced and vocal eartips)
Modular cable
Carrying case



The IEM shell is made of 3D printed plastic and a metal faceplate. Comfort is really nice and the iem is lightweight, overall can be enjoyed for longer listening sessions.




SOUND IMPRESSIONS
Now here's the fun part. Here's my take on the S15 Pro.

BASS
The mid bass really shines on this set or let’s say, it emphasizes more on the mid bass, in turn of that, the sub bass kinda lacks that kick and sustain when it comes that attacks of rumbles that leaves me wanting for more (just needing a tad bit) but I say this is because of the tuning, it’s not that type of bass that’s just all fun and games but more of a non - fatiguing bass. It’s consistent all throughout bass frequencies and not giving that overwhelmed sensation. Need that thump? Slam? Rumble? It gives you that, a full sound if you will.

MIDS
Oohh so licious mids, again very consistent with the frequencies with a tint of warmth in there. Female vocals sound very natural and clean while male vocals have that tone and weight to it. Very balanced and enjoyable.

TREBLE
Hmmmmmm….. Underwhelming? As I’m one of those persons who wants some sparkle’s and I'm not getting any here, so if you’re a treblehead this ain’t for you. But with my nitpicks the Treble is really great, very well controlled (again), transparent, no harshness and a very rich and detailed.

TECHNICALITIES
Soundstage is just okay, the width and depth is there but nothing too fancy. Imaging also is there but not the sharpest.

CONCLUSION
At first listen with this set it didn’t really give me that wow factor, also this is my first experience with planar iem’s, this type of thing needs to grow on me and it did. The more I use it, the more I understand how its tuning works. A really really laid back set, not that offensive, not bright sounding, we got a really safe one here. A set that can be used for long listening sessions without feeling that fatigue. Full bass, lush mids, rich treble, this is a trifecta. A planar that’s worth keeping in a collection.

P.S I am not affiliated with any audio companies. This is my 100% honest review.

INTRO
I recently had the pleasure of testing the Letshuoer S15, and I must say it left a lasting impression. As an avid audiophile, I'm always on the lookout for earphones that deliver a truly exceptional audio experience, and the S15 did not disappoint.

Disclaimer
I would like to thank @LetShuoer Audio and Ivy for arranging a unit for me. My opinions are unbiased, and I haven't been influenced or instructed to praise these IEMs. Every detail in this review is actual experience made by listening for hours everyday.


Packaging

The premium packaging comes with a high quality boxing with a slide out draw that holds three modular connector pins (2.5mm balanced, 3.5mm and 4.4mm balanced terminations) a cylinder containing an excellent modular cable. The two sets of silicone tips "Vocal ear tips" and "Balanced ear tips" The cable has an excellent quality and looks.

Comfort and Fit
Comfort is key during prolonged listening sessions, and the Letshuoer S15 excels in this aspect. The earphones come with a variety of ear tips, ensuring a snug fit for any ear shape. I found them comfortable even during extended use, making them suitable for daily commutes.



Sound Aspects

Source used :

Realme 9 Pro

Jcally AP7
Ibasso DC04 pro

This planar iems spend 50-60 hours of burn in before taking details of this review

Bass

The mid-bass it is forte, with quantity just enough when called. The quality of midbass is truly exceptional. The sub-bass is not the most extended, with a noticeable roll-off, resulting in no big rumble heard. It makes it up with solid texturing noted, with a punchy, fast and clean bass without any mid-bass bleed.

Midrange
It has a more forward midrange and also a more thick note weight. Like the bass, sounds linear and clean, allowing you to literally enjoy the lushness of vocals and instrumental layers. The warm tonality of this iem removes all the negative quality of a planar transducer.

Treble

The highs is airy and resolving, it has great treble extension without being bright or sounding overly pushed to get fake air. As for the lower part of the treble, it sounds smooth and relaxed. Not dull by any means, just a forgiving and musical treble presentation. The transducer has less to no metallic timbre makes you have more time to listen to.

Technicalities
The soundstage is quite impressive. Giving the S15 an extra juice will produce the sound out of your head and above average in term of wideness and tallness.

The imaging and layering is above average. The sound layering is great making a holographic macro dynamic experience, but it feels a bit foggy in background when bass is produce or midrange instrument like vocal take the lead the wide presence of it will give a slightly blur definition edge of other instrument in similar range. With instrumental musical like classical, the imaging is impressive.



Conclusion
The Letshuoer S15 delivers a top-notch audio experience with its comfortable build and design and impressive sound quality. The enjoyment and time you spend with it will justify the price it cost. If you're in the market for high-end earphones that prioritize audio fidelity and for prolonged listening session, the Letshouer S15 is undoubtedly worth considering.