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!

DISCLAIMER

I would like to thank Ivy from Letshuoer for providing this review unit. The EJ07M can be gotten here (no affiliate links): https://letshuoer.net/products/ej07m-best-in-ear-monitors-for-singers-drummers-studio




SPECIFICATIONS

• Driver configuration: 7 driver tribrid - 1 x 10 mm carbon nanotube DD, 2 x Sonion 2389 BAs, 4 x Sonion EST65QB02 ESTs
• Impedance: 19 Ohms
• Frequency response: 20 Hz - 30 kHz
• Sensitivity: 107 dB
• Cable: option for 3.5 mm or 4.4 mm termination; 2-pin 0.78 mm; OCC monocrystalline copper cable
• Tested at $649 USD

ACCESSORIES



The included accessories are pretty generous, befitting of a MidFI IEM.



Apart from the IEM, these are included:
- 3 pairs of wide-bore silicone eartips
- 3 pairs of narrow-bore silicone eartips
- 3 pairs of of foam tips
- Cable
- Cleaning brush
- Screw-on metal round case


The included wide-bore tips boost soundstage and treble, whereas the narrow-bore tips increase bass (though at the expense of a smaller soundstage). The foam tips increase isolation and tame treble.




During ordering, one can select between a 4.4 mm or 3.5 mm termination for the cable, depending on your source preferences. This cable is fashioned from OCC monocrystalline copper cable. It lies on the thinner side, but is tangle-free and supple, with minimal microphonics. There is a chin cinch for added grip during usage.

Letshuoer didn't stinge on the packaging, and the metal round screw-on case is an excellent addition for any audiophile worth his or her salt. It is lined internally with a soft material to cushion the contents. A cleaning brush also assists with removing debris and ear wax.

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


BUILD/COMFORT



The EJ07M housings are crafted from 316L stainless steel. Internally, the shells utilize aviation-grade aluminum alloy, and the externals are sandblasted to a smooth finish. The shells are light and ergonomic, with no comfort-issues on my end.



One can opt between a black-gold face plate, or a multi-hued one. Each housing even has a serial number, to add some exclusivity! The 2-pin connector is always a plus in my book, as MMCX connectors may fail with repeated cable swaps.




Sadly, despite being vented, there is some driver flex during insertion, but this can be mitigated with perhaps using the foam tips, or exploring with other sized/aftermarket tips.

Passive isolation is advertised to hit 26 dB and during my testing, it is thereabouts. Thus, this set will make a good companion for outdoor usage, or even for stage monitoring!


DRIVABILITY

I tested the EJ07M with the following sources:
- Apple dongle
- Cayin RU7
- Colorfly CDA M1 DAC/AMP dongle
- Creative Sound Blaster X5
- E1DA DAC/AMP dongle
- Hiby R3 Pro Saber 2022 DAP
- Khadas Tone Board -> Schiit Asgard 3 amp
- Khadas Tone Board -> Topping L30 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

The EJ07M is not too power hungry, and easily drivable. Amplification is not really essential.


INTERNALS

The EJ07M is a 7 driver behemoth, packing a 10 mm carbon nanotube DD for the bass, 2 Sonion 2389 BAs for the midrange and 4 Sonion EST65QB02 ESTs for the high end. These are linked by a 3 way crossover.

The expensive Sonion ESTs are usually known to give an extended treble that isn't as harsh as typical BAs or piezoelectric drivers, so Letshuoer are packing some premium ingredients in this IEM. Though the usual adage of tuning trumping driver type/count applies, so let's read on to see if these Sonions are well implemented.


SOUND & TECHNICALITIES

Graph of the EJ07M via IEC711 coupler. 8 kHz area is a coupler artefact peak.


Tonally, the EJ07M sports a U-shaped signature, which synergizes well with most music genres.

The EJ07M is a sub-bass focused IEM. Bass descends low with a nice rumble, though in terms of quantity, this IEM isn't an outright basshead set. However, bass quality is top-notch, with superb texturing, and a fast and clean bass-line is heard, with not an ounce of mid-bass bleed.

There's a slight recession in the lower midrange, but with no big bass to encroach here, this provides a very transparent and clear midrange with a dark background. With a 6 dB ear gain in the upper mids, vocals are not shouty, and the EJ07M is non-fatiguing in this area.

Treble has decent extension, though the EJ07M isn't the most airy or sparkly. The treble is smooth and safe for treble-sensitive consumers, though still retaining a fine degree of resolution and micro-details - indeed, that's a real tough line to balance, yet the EJ07M manages to. Sibilance is minimal too. Many CHIFI commit the cardinal sin of over boosting the treble to give "fake" details and clarity, and the EJ07M does not need to resort to such party tricks.




Considering the EJ07M packs a whole host of BAs and ESTs, timbral accuracy is very decent, though don't be expecting this set to beat pure single DDs in this metric.

The EJ07M is a technical beast. Micro-detailing and fine nuances in music tracks are easily picked up, with this IEM furnishing pin-point imaging with consummate ease. Unfortunately, the EJ07M has sub-par soundstage width, though height and depth of soundstage is above average. Thankfully, the precise imaging makes up for the lack of soundstage width, and I'd rather have something more intimate in stage with accurate imaging, than a huge nebulous soundstage blob with fuzzy imaging.

Coherency is also another strong point, with the fast DDs keeping up well with the midrange BAs and treble ESTs, which isn't something that can be said for hybrids or tribrids in general.


COMPARISONS



Comparisons were made with other midFI tribrids with ESTs. Planars, hybrids, single DDs and pure BA types were left out of the equation as the different transducers have their pros and cons.


Moondrop Variations

The Variations is a Harmanish set with more zealous upper mids - it can get shoutier in this region - with a bit more treble air and extension. The Variations is slightly more sibilant and is scooped out in the lower mids/mid-bass region, with a more anemic note weight.

The Variations is harder to drive, and has a bit of a more metallic timbre for acoustic instruments. The Variations has better soundstaging, micro-details, imaging and clarity, though at the expense of more fatigue in the upper mids area.


Mangird Xenns Up

The Xenns Up has thicker lower mids, with less sub-bass. The Xenns Up also is a bit more forwards in the upper mids/lower treble.

The Xenns Up is also behind in technicalities, with a hair worse soundstage, imaging and instrument separation.

Additionally, the Xenns Up is more uncomfortable to use in terms of ergonomics.


CONCLUSIONS

The EJ07M holds its own in the competitive midFI tribrid segment, boasting solid build, good ergonomics, stellar accessories and easy drivability. It furnishes a well-balanced U-shaped tonality to suit most music genres, with a fast and clean bass and a smooth but detailed treble.

In fact, the EJ07M fares extremely well when it comes to technical chops - with pin-point imaging and excellent resolution (without over-boosting the treble for fake clarity) - perhaps other than the soundstage width being a bone of contention. The EJ07M also displays exemplary coherency amongst the myriad drivers and decent timbre for a BA containing pair.

With great passive isolation and the aforementioned solid comfort and technicalities, the EJ07M makes a fine option for stage monitoring or audio work, and musicians should consider this IEM for musical gigs.

Alas, nothing is perfect, and some nitpicks would be driver flex, in addition to the previously alluded to deficient soundstage width. Bona fide bassheads and diehard trebleheads may also find the tuning choices not to be up their alley, but by and large, the EJ07M is one of the cogent MidFI tribrids out there.

“Music is a high revelation than all wisdom and philosophy.”

--Ludwig Van Beethoven, German pianist and prolific composer from the Classical Period.

Click to expand...

Hybrid drivers setup are probably the best implementation as you will get the best possible performance on both tonality and technicalities. We will have the tactility and dynamic performance of a dynamic driver, the resolution and superb clarity of balanced armature drivers and the airiness and vividness of electrets/"electrostatic" drivers. It is like you got the best transducers in the world on a single package.

This is not my first review on an IEM with "tri-brid" drivers set-up as I previously did a review of some products from other audio companies. The first midrange tribrid driver set-up IEM that I ever tested was from Fearless Audio in 2019. They are part of the Lancelot series and I actually like how it sounds and how the drivers were implemented on an in-ear monitor. After that moment, I decided that I must have a "tri-brid" driver IEM and that's how my audio enthusiasm journey began.



After 4 years, I finally secure to do review some "tri-brids" models and one of them is from LETSHUOER which give me and my comrades in audio reviewing to have a chance to do review of their well-coveted and highly-praised midrange model, The EJ07M. It is no secret that I prefer hybrid drivers IEMs over single or dual dynamic drivers as I still believe the physical limitations of dynamic drivers, especially on technical aspects.



I already did a lot of reviews on LETSHUOER products and I finally realised what LETSHUOER separates them from their contemporaries in the audio industry, it is their technical prowess and meticulous workmanship of their products. And this particular midrange model was one of their masterpieces and their zenith of excellence.



As I introduce this product once again, LETSHUOER EJ07M is an in-ear monitor of a multi hybrid-driver or in other terms, "Tri-brid" set up on its internals. The transducers that LETSHUOER implemented here are consisting of single 10mm dynamic driver with carbon nanotube (CNT) diaphragm, a dual premium balanced armature drivers from Sonion and two (2) dual Sonion electrets/"electrostatic" drivers. The dynamic driver will handle the low frequencies for faster transient response, better resistance with low distortion level to deliver such precision and better dynamics. The Sonion 2389D balanced armature drivers mainly handles the midrange up to the presence treble for clarity, transparency and crisper sound on vocals. Then the quadruple SONION EST65QB02 Electret/"Electrostatic'' are responsible for the rest of the treble region to have a more airy and sparkle. Each transducers have its own acoustic tube that integrated into a three-way crossover for lower distortion, better separation of the frequencies and improving better rendering on high frequencies.



The internal components are encapsulated in a solid stainless steel shell chassis which gives more structural integrity and resistance. The EJ07M shell design takes the form factor of a UIEM (Universal In Ear Monitor) mould which are more versatile to all ear types and despite that it has a stubby nozzle but I don't feel any discomfort on wearing them on my lug holes for a long listening session. It has a single vent hole at the upper part of its cavity base. Its faceplates are also made of stainless with an inspiration from cubism and abstract art which are quite attractive and eye-pleasing. LETSHUOER also offer another colourway option which is a combination of black-coloured cavity base and carbon fibre with speckled gold dusts. EJ07M uses a recessed 2-pin connector as its detachable mechanism for its proven and stable connection.



For more details on how it rests well on my lug holes, it manages to block some external noises from the outside surroundings as it seals well that gives me a good isolation despite its stubby nozzle. This really amazes me on LETSHUOER's attention to detail on product design ergonomics.



The LETSHUOER EJ07M is a midrange set and we expect that a midranger offers a high quality of accessories with a substantial quantifying amount of inclusions and LETSHUOER delivers it to give us the best possible unboxing experience in a midrange set. Its square shaped box is a tad larger than usual to some packaging boxes from other midranger sets but it has a slimmer profile. It has product illustration at the front with model name and company logos of LETSHUOER, Sonion and Knowles (I don't see one based on the specification that LETSHUOER posted on their publications). Then on the back part of the box, there is an instruction on how to properly wear the EJ07M and some printed product specifications. The accessories inside are well-organised and they are all placed in a foam.



Here are the following contents inside the LETSHUOER EJ07M box:


■ A pair of LETSHUOER EJ07M IEMs.

■ Stock cable with L-shaped 3.5mm termination plug made of monocrystalline silver-plate copper wirings.

■ A circular, solid metal IEM case.

■ 3 pairs of memory foam ear tips.

■ 3 pairs of opaque, balanced bored eartips of different standard sizes.

■ 3 pairs of off white-coloured, balanced bored eartips of different standard sizes.

■ A cleaning tool kit.

■ Product album.

■ Some paperworks like Q.C control, contact card and warranty card.



As for amplification and power scaling capability, EJ07M can be amplified by any sources even from devices with decent power output like smartphones and tablets. But putting the EJ07M on even better sources with dedicated Hi-Fi DAC/Amps like LG Phones, DAPs, USB DAC dongles and desktop DAC/amplifiers will give its fullest potential the sound even more dynamic, more vivid and full-range sounding.



The tonality of LETSHUOER EJ07M is a leaning toward more of a reference-neutral sound profile which have a marginal elevation on low frequencies just to give that bass presence then a neutral with ample texture midrange frequencies and just a tad boost just to give a balanced, smooth yet well-extended high frequencies.

These are my observations on sound description and characteristics from each part of the frequency range spectrum.


LOWS/BASS:

As a neutral sounding set, the bass quality of EJ07M has an ample punch, balanced yet incisive enough and accurate. This is certainly not bass-head's ideal bass quantity as it doesn't have that boomy and a very authoritative lows but instead it represent kind of bass response that is clean, detail and well-separated from other frequencies.

On my first impressions, I thought that it only focuses on sub bass but that wasn't the case.

It has a very balanced presentation on both sub bass and mid bass. Sub bass have a good reverberation and rumble as I clearly perceive some instruments like drum machines, synthesisers, low tone bass guitar and octabass from synth-pop, rock, old school hip-hop, RnB and modern orchestra tracks. The mid bass has a satisfactory amount of texture just to give ample note weight on bass drum kicks, bass guitars and bass baritone vocals. The bass drum kicks have this resonant and sustaining sound which is a standard for neutral sounding like this set. Bass guitars have a rasping and resonant quality that gives growl and I can definitely hear a good detail on every plucking, slapping, fretting and even fretless note string. Despite the less depth on bass-baritone vocals compared to most bass-boosted IEMs out there, It still has the density and dark sound characteristics to give a definition on the vocal quality of the likes of Barry White, Louis Armstrong, Andrew Eldritch and Peter Steele of Type O Negative.



MIDRANGE:

The quality of the midrange on EJ07M is one of my ideal curves on how a midrange frequency should sound like on a neutral IEM. It has balanced textured, transparent, pristine and quite energetic to give an excellent definition of detail and clarity to vocals and instruments.

Female vocals will sound very euphonic and hypnotic on this one in any vocal type under this category, and it also gives a regal and guttural sound in male vocals. Contraltos like Annie Lennox, Toni Braxton and Tracy Chapman have a smokey and rich sound from them though you might find a tad less darker due to its transparent nature of EJ07M's tuning. Mezzo-sopranos have its velvety, smooth and deep as I listen to Stevie Nicks of the famed Fleetwood Mac, Andrea Corr of the Corrs, Sharon Den Adel of Within Temptation and the late Dolores O'Riordan of The Cranberries which their vocals that envelops me with their sweet and insouciant voices. Sopranos vocals fares even better on this one on how it performs very well on either lyrical, dramatic, soubrette and even coloratura ones doesn't well ear-splitting nor piercing instead they have these crystalline, shimmering and silky sound that gives me more hypnotic and ethereal state. The soprano singers that I usually listen to are Alison Krauss, Mariah Carey, Tarja Turunen, Olga Pereyatko and Diana Damrau. On male vocals, EJ07M can give a more natural sound on baritone vocals to have a sleek and smooth sound when I listen to Lenny Kravitz, Jimi Hendrix, Scott Weiland and Eddie Vedder of Pearl Jam. I listen to countertenors as they have that distinctive flexibility and power that falsettos that hits the highest vocal register that a human male voice can reach. Andreas Scholl, James Bowman, King Diamond of Mercyful Fate and Robert Gift of Fine Young Cannibals are primary examples of countertenors in both classical and modern music. Tenors have that tinge of spiciness, brassy and brilliance that I want on from the voices of Luciano Pavarotti, Placido Domingo, Robert Plant and some of the most flexible singers of all time that can reach this scale with the likes of Freddie Mercury and Prince.

The instruments sound quite balanced and natural as it can handle both percussives and rhythmic ones effortlessly. Brass like trombones, horns and trumpets have its own distinguishable characteristics as trombones have its penetrating and eruptive sound while horns have velvety and intense sound characteristics, and then on trumpets have this magnificent and dazzling sound to give that "heroic" vibe. As for woodwind instruments, flutes have ethereal, graceful and silvery sound while piccolos have a whistling and lightness of their sound qualities, then the saxophones have their typical characteristics which are substantial, lively and reedy sound. String instruments like guitars either acoustic or electronic have that sufficient crisp, bright and lingering sound on every pluck while on violins, it has the sparkling, lively and vibrant sound on every move on its bow over the strings. On percussion instrument sections like snare drums, toms and timpanis, the snares have sharp and precise sound on them, toms have hard and menacing sound from it, and then on timpanis have a resonant and dry sound on every rebound and strikes. Mallet-type percussives like celestas have that bell-like, sweet and lustrous to give that heavenly or Parisian royal ball vibe, glockenspiels have those jingling and glistening sound and last but not the least, pianos have these vibrant, vivid and silvery tone from them.



HIGHS/TREBLE:

Despite the full range capabilities of Sonion balanced armature drivers along its quad Electret/ "Electrostatic" drivers, I find the treble quality of EJ07M are rather balanced, leaning towards neutral and clearly smooth to my ears. Even with its smoothness, it has an excellent detail, sufficient clarity and quite airy.

On my long listening listening session, it seems that the upper mids to presence part of the treble is either levelled, tamed or subtly descended between these frequencies as it removes any possible stridency or sibilance. For sure that my other side for being a treble head was still yearning for something more gleaming and shimmer but I don't think that EJ07M is a dark sounding set.

The cymbals are quite very life-like sounding as it has a shimmering and sizzle on every crash and strike while hi-hats seem to have that distinctive shortened buzzing sound. The sizzling gradual decay from cymbals are also my determining factor on how I perceive treble extension if it is either too splashy or too dull but EJ07M is quite very airy with sufficient sparkle and substantial amount of harmonics.



SOUNDSTAGE, IMAGING AND OTHER TECHNICALITIES:

The perceived size of sound/speaker stage on LETSHUOER EJ07M was quite wide enough in my opinion. For sure that this was not the widest one that I ever encountered on an in-ear monitor but it gives me a sufficiently spacious headroom within my aural sphere as it also has good height reach and impressive depth between front and back as if I was in a large auditorium.

Imaging, separation and layering are certainly the EJ07M's strongest assets that it definitely reaches a TOTL-level performance. It gives me that immersive, 3D-like presentation that in some tracks, I feel like that I was the performer/ instrumentalist that I was able to locate the exact placement of other instruments and positioning of the vocalist(s) in a holographic and stereographic sound field. Separation have a good amount of spacing of all elements and each tone of instruments and vocals have its own distinctive frequency layers on how it well-arranged in a sonic canvas presentation that even the most busiest and most complex instrumental tracks out there, EJ07M can replay them effortlessly in a fine, well-delineate manner.

All drivers of LETSHUOER EJ07M are of high quality and I expect an excellent cohesion and homogenous performance on how it renders the execution of the envelopment of a sound. As I anticipated, EJ07M didn't fail me and perhaps it even exceeded my expectations.

It also has remarkable resolution capabilities as it was able to retrieve a lot of micro details and nuances extracting infos from audio tracks with a more homogenous presentation of macro-dynamics. As for overall tonality, This set has natural and almost uncoloured tonal colour as it is able to present an undulating, high fidelity sonic properties.



PEER COMPARISONS:


FEARLESS AUDIO ROLAND (2019)

● This IEM actually introduced me to the realm of "Tri-brid" driver set-up IEMs. Like the EJ07M, Roland has a similar set-up with the exception that it has a dual older generation of SONION Electret/"Electrostatic" driver. The shells of Roland are made of medical-grade, high quality acrylic resin and it has a proven 2-pin connector.

● The Roland has a more mild U-shaped sound signature which makes it less neutral compared to the EJ07M. It has a warmer presentation with more punchy bass and more heft on male vocals. The midrange is a bit recessed but retains its clean and detailed presentation. Treble has similar curves with EJ07M which also has a smooth presentation but has less treble air despite the "Electrostatic" drivers that it has. Overall, the Roland is a more fun sounding set, therefore it's a more all rounder one.

● The Roland has more than a regular technical abilities, like it has above average sound field dimensions as it gives a more natural head room rather than an expansive one. It has a more concave presentation on projecting its imaging with good separation and layering. Detail retrieval of this set was somehow excellent as it can retrieve a good amount of details.



KINERA IMPERIAL URD (2022)

● Imperial Urd has a larger shell chassis made of medical grade resin and also has UIEM form factor. Like EJ07M, it also have a "tri-brid" set up but it has a rather interesting set-up as it has 2 dynamic drivers, 1 full-range balanced armature from Bellsing and dual Sonion Electret drivers. Both sets have impressive array of inclusions but Urd fares a bit better as it has a modular cable which is more logical for the current trend in portable audio.

● Imperial Urd takes another curve of a neutrality which is balanced-neutral sound profile. It has a tad warmer sound as it has punchier bass, a well-textured and natural sounding midrange which give more weight on some instruments and vocals to give that lush and euphonic feel. Treble response of Imperial is rather smooth and balanced, probably too smooth as it lessens some amount of sparkle and details.

● As for technical performance, it has a good sound/speaker stage dimensions which gives me a moderate spacious headroom. The imaging presentation is a bit inferior if I compare it with EJ07M as it has a typical two-dimensional stereo panning and I struggle a bit on pointing out the placements of instruments and singers. Resolution capability of this set is rather average as it has decent detail retrieval and more focus on macro-dynamics.


Once again, LETSHUOER prove its excellence as an audio company with its knowledgeable acumen on the current state of portable audio market and superb engineering and worksmanship on their products how a midranger product should perform like. The EJ07M is now reaching its pinnacle as the gold standard to all midrange sets out there with its exceptional sound quality and terrific technical capabilities.


LETSHUOER truly live up to its expectations to the sphere of audio enthusiasm as simply one of the best out there. And EJ07M was its mark of its excellence and a testament for its accomplishment.


LETSHUOER EJ07M is still available on LETSHUOER official online store. You can click the non-affiliated link below:

★LETSHUOER EJ07M - OFFICIAL STORE★


And also checkout my other full reviews and first impressions on LETSHUOER products:


◆ LETSHUOER GALILEO

◆ LETSHUOER CADENZA 12

◆ LETSHUOER EJ09

◆ LETSHUOER CONDUCTOR

◆ LETSHUOER D13

◆ LETSHUOER S12 PRO





SPECIFICATION:

MODEL: LETSHUOER EJ07M
IMPEDANCE: 19Ω
SENSITIVITY: 107dB
FREQUENCY RESPONSE: 20Hz – 30KHz
CABLE LENGTH: 1.25M
PIN TYPE: 2-PIN CONNECTORS
PLUG TYPE: 3.5MM
DRIVER UNIT(S): (1) DYNAMIC DRIVER + (2) BALANCED ARMATURE DRIVERS + (4) ELECTRET DRIVERS


Some 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*



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 LETSHUOER for providing this review unit. I truly appreciate their generosity and trust towards me and other reviewers.

Letshuoer EJ07M Review​

Thank you to Letshuoer for lending me this set for review.

What you find in the box is not a lot for an iem that costs this much: the IEMs, an occ copper cable, 2 sets of silicone ear tips (S/M/L), a little box with foams, a metal case and the paperwork. Like the S12 Pro, the EJ07M features a relatively compact body, providing an excellent and comfortable fit. They are made of sturdy stainless steel with fancy and unit-dependent faceplates.

The cable is quite nice, It doesn’t tangle and the hooks are comfortable, the selection of tips is also, well I’d say generous but the IEMs are $699 after all.

Driver Setup
Dynamic Driver	10mm Dynamic Driver
Balanced Armature	2x Sonion 2389
Electrostatic Driver	Sonion 4 in 1 electrostatic driver

Click to expand...

These IEMS have a very clinical and neutral sound signature.​

The Bass
The bass is tight and textured. Much snappier than I would expect from a Dynamic Driver, there is a generous boost to the sub-bass. It is very well articulated and detailed, providing you with the thump of every kick and thick rumble when it is called for. Delicately layered and rich with texture.

The Mids
The Mids come across as warm and layered also, with excellent instrument separation, Pianos are full-bodied and rich, and guitars similarly sound great and natural on these.

Upper Mids and Treble
Female vocals sound natural and present, Male vocals sound kind of recessed and dull, and cymbals have a slight edge to them but come forward with detail and precision.

Technicals
Macro and Micro Dynamics are faithful and make these an extremely engaging set to listen to, fine details are easy to pick out and separation is excellent, soundstage is as expected from an IEM, narrow, but more narrow than other IEMs I have tried; oh well no issue, it is an IEM afterall, Imaging is good.

Overall:
If you’re looking for a mid-tier iem, I don’t think you could go wrong with these, for $699 they’re a compact and comfortable set with engaging bass and faithful treble reproduction. I’d compare them to the variations, but I think I like these more.

This review was previously published at www.audioreviews.org

Executive Summary​

The LETSHUOER EJ07M is a very enjoyable neutrally-tuned vivid performer with an added bass boost.

Introduction​

LETSHUOER are a Shenzhen company specializing in OEM. They are having a current hit with the $149 planar magnetic LETSHUOERS12. The LETSHUOER EJ07M are the company’s current flagship iem and improved version of their very first iem, the $850 EJ07.

Whilst I am always critical with newcomers skipping elementary school and taking shortcuts, the EJ07M is a good pair. I found it first non descript, but it slowly grew on me. And it grew quite big. It is an earphone more on the lean side without being sterile.

Specifications​

Physical Things and Usability​

In the box is…actually not much for an iem of this price: the earpieces, an occ copper cable, 2 sets of silicone eartips (S/M/L), a little box with foams, a cleaning brush, a metal case, and the paper work. Just like the S12, the EJ07M features rather small earpieces, which provide for a good and comfortable fit (for me). They are made of aviation aluminum alloy with fancy, one-of-a-kind faceplates. The company claims they block up to 26 dB of ambient noise. Their low impedance makes them easily drivable.




In the box…

Metal shells with fancy faceplates.

I found the earpieces’s haptic and form factor great, but the isolation was only soso for me. The cable’s wire structure may be of great purity/quality, there is no microphonics, however the overall jewellery effect is rather small.

LETSHUOER’s translucent standard stock tips worked well for me.

Tonality and Technicalities​

Equipment used: Sony NW-A55; Macbook Air + AudioQuest DragonFly Cobalt or Earstudio HUD100 (high gain); white stock tips.

The EJ07M is tuned in a gentle U-shape, with a bottom-end emphasis on sub-bass, a moderate pinna gain, and an early treble rolloff. It is essentially neutral with a sub-bass boost. The graph resembles “the personal target curve of the season” of many reviewers (we at www.audioreviews.org don’t have such a thing), which excludes disturbing peaks and other unpleasant surprises. Its presentation is on the lean but never analytical side.

Sub-bass extension is decent (and the rumble can be a bit fuzzy), mid-bass is focused/, slightly lean with a crisp attack and fast decay, much faster than expected from a single-dynamic driver. It has a good kick and tactility. There is no mid-bass hump that pounds unpleasantly against my eardrums.




Transition to the neutral lower midrange is smooth and without bleed because the low-end boost is so far below that it does not affect vocals and instruments (crisp piano), which have very concise note definition and energy. They are not overly rich but never thin and also not recessed (vocals can be intimate), and the corners can be somewhat sharp. The midrange is very clean and clear and there is no shoutiness (although we are getting close). All this makes for great speech intelligibility.

Treble rolloff starting at 4 kHz narrows the soundstage and limits sheen. This is surprising as you would expect outstanding extension from an electrostatic driver, as perfectly demonstrated in the Vision Ears Elysium, for example. High notes are very subtle and back. A very sparse use of the EST.

Soundstage has good depth but the aforementioned limited width. Dynamics is very good, there is plenty of impact in the attack. The music is more moving back and forth than sideways. Spatial cues is very good. Lean notes make for lots of space between instruments on a crowded stage and great midrange clarity. Transients are generally fast, particularly at the recessed top end. Resolution is very good!

In summary, the “edgy” EJ07M is well rounded (sic!) and does nothing wrong.

LETSHUOER EJ07M Compared​

The $150 magnetic planar LETSHUOER S12 iem plays bassier, has a wider but shallower stage, a tad warmer, and therefore less neutral. The EJ07M offers better vocals rendering, better (micro-) dynamics, and similar resolution.
The more organic $600 single DD Oriolus Isabellae plays thicker, richer, softer, and more relaxed, lagging behind in resolution and crispness and energy in favour of timbre and a soothing temperature.

Compared to the warmer, bassier $699 Dunu Zen single DD, the EJ07M lacks depth and body and plays swifter and more brittle. The Zen has a pronounced upper midrange glare and an earlier treble rolloff.


The planar magnetic LETSHUOER S12 write the company’s current success story.

Concluding Remarks​

The LETSHUOER EJ07M excels by doing well in all departments, though not achieving the highest possible score in each of them. It delivers a swift, neutral sound with a boosted sub-bass and technicalities in line with its peers. Nevertheless is its main competition internal, as the excellent $150 LETSHUOER S12 is not far behind in most aspects.
Until next time…keep on listening!

Disclaimer​

The EJ07M were provided by LETSHUOER and I thank them for that. After this review, it went on a Canadian "West of Centre" tour.

Get the LETSHUOER EJ07M from letshuoer.net.

Disclaimer: Some extremely generous people helped funded the majority of the cost of this purchase and I also got a review discount (20%) off from HifiGO. Thank you very much.

Price: 600 usd

Specifications:

Impedance: 19 ohms.

Sensitivity: 107dB.

Frequency Response Range: 20Hz-30kHz.

Distortion: 0.5%.


Accessories:

S/M/L silicone tips (2 types)

S/M/L foam tips

Carry case

Cleaning tool


Cable: 2 core cables, measuring at 0.28 ohms. Has a working chin-slider, plastic connectors though but a metal divider. No need to change the cable (unless for aesthetic reasons).






Build: Shell out of stainless steel, nozzle has a metal filter but no lip for the tips. A bit heavier than average but is on the smaller side (for a tribrid).

Fit: As the shell is on the smaller side (for a tribrid) fit shouldn’t be a problem for most people as it fit me great. The short nozzle on the other hand could be an issue for some people though (not for me).

Comfort: Quite good as the shell is on the smaller side (for a tribrid).

Isolation: Very good, not on ventless BA iem level, but quite good.

Tanchjim Filters: Some people have reported that they need to put on Tanchjim filters to reduce resonance peaks. This was not needed for me but something to keep in mind at least.

Setup: Schiit Asgard 3 (low-gain, volume around 8 o´clock), Final Audio Type E tips LL, Cable A6 4.4mm

Lows: Bass is elevated, with a sub-bass focus that extends very low and does rumble when needed, although not as much as bassheads would want. Mid-bass is low enough to be clean but high enough to actually have some quantity when the track needs it. Excellent bass tuning and with very impressive texture, is on the tighter/faster side as well.

Mid-bass: Metallica – fight fire with fire (01:11-01:52), very clean due to the speed/tightness, quantity is a bit low but good texture. The (02:55-03:01) section with the chopper is hearable and clean.

Hiroyuki Sawano – Pretenders (01:18-01:47), pretty good quantity and very good texture. Clean due to the speed/tightness.

Sub-bass: Djuro – Drop that bass (01:15-01:30), extends very low and does rumble although not as much as I would like. Punch quantity is good although not as much as I prefer, well textured, fast and tight.

Will Sparks – Sick like that (03:08-03:22), quantity is good could be higher though, but well texture, clean due to the speed/tightness.

Mids: Excellent vocals, both male and female vocals are forward when needed or not when not needed with great tonality, very versatile, although because of that the tonality will sometimes lack some brightness (female) or some warmth (male). Timbre is great and sounds very natural due to those Sonion BAs.

Female-vocals: Hiroyuki Sawano – OldToday (01:25-01:52), Vocal tonality is very good, forward and clean, timbre is very good as well. Instrument tonality is excellent, clean and quite good timbre/coherency.

Yuki Hayashi – MightU (01:58-02:55), vocal tonality is good although could be a bit brighter, is forward and clean with very good timbre. Instrument tonality could be brighter, but very good timbre.

Evanescence – Bring me to life (01:18-01:35), not shouty nor peaky treble.

Hiroyuki Sawano – Crescent (02:07-02:26), a bit peaky.

Male-vocals: Hiroyuki Sawano – Pretenders (00:57-01:17), excellent vocal and instrument tonality, very clean and has good timbre.

Hiroyuki Sawano – Scapegoat (00:57-01:17), vocal and instrument tonality needs to be warmer, but very clean and detailed with good timbre.

Treble: Linkin Park – Shadow of the Day (03:24-03:42), electric guitars aren’t sharp at all but does lack some brightness, timbre is good but could be better.

Deuce – America (03:03-03:16), not fatiguing nor chaotic.

Hiroyuki Sawano – Lose (string version) (01:22-01:59), Cello tonality could be a bit warmer, but very good texture, clean, detailed and timbre. Violin tonality needs to be brighter and timbre could be better, but clean, detailed and good treble-extension

Hiroyuki Sawano &Z (02:18-02:57), very good tonality, clean and detailed, good timbre.

Soundstage: Good width and impressive depth, holographic soundstage.

Tonality: L-shaped with very good balanced across the range, that leans towards warmth. Very good timbre/coherency for a tribrid.

Details: Excellent macro and micro-details (especially when the tonality doesn’t elevate the treble that much).

Instrument Separation: Very good separation and excellent imaging.

Songs that highlight the IEM: https://www.youtube.com/watch?v=hSzyI3u5DFo https://www.youtube.com/watch?v=HxlysqrFjHo https://www.youtube.com/watch?v=Lhg75PmtD2k

Good genres: Very versatile and matches well with my library

Bad genres: Hip-Hop (too fast/tight bass), EDM (not enough rumble, sub-bass), Jpop (too tame treble)

Comparisons:

IEM: Tanchjim Oxygen, Final Audio Type E tips LL, cable A6 4.4mm

Bass: Djuro – Drop that bass (01:15-01:30), extends a lot lower on the 07m and rumbles a bit more. Punch quantity is higher and more textured on it but faster and tighter on the O2. More tonally correct on the 07m but better timbre on the O2.

Hiroyuki Sawano – Pretenders (01:18-01:47), similar quantity but more textured on the 07m while it is faster and tighter on the O2. More tonally correct on the 07m but better timbre on the O2.

Metallica – fight fire with fire (01:11-01:52), bass is similarly clean but faster and tighter on the O2 with more texture on the 07m. Tonality is a lot brighter on the O2, more correct on the 07m.

Mids: Hiroyuki Sawano – OldToday (01:25-01:52), vocal tonality and timbre are better on the O2, but similarly forward while it is cleaner and more detailed on the 07m. Instrument tonality, detail and clarity are better on the 07m but better timbre on the O2.

Evanescence – Bring me to life (01:18-01:35), shoutier and peakier on the O2, more fatiguing.

Hiroyuki Sawano – Scapegoat (00:57-01:17), vocal and instrument tonality are a lot better on the 07m as well as more detailed. Timbre is better on the O2 as well as more clarity due to the brighter tonality.

Treble: Linkin Park – Shadow of the Day (03:24-03:42), electric guitars are a bit sharp but more tonally correct and better timbre on the O2.

Hiroyuki Sawano – Lose (string version) (01:22-01:59), Cello tonality, texture and detail are better on the 07m but better timbre on the O2. Violin tonality and timbre are better on the O2 but more textured, detailed and better treble-extension on the 07m.

Hiroyuki Sawano &Z (02:18-02:57), better tonality and detail on the 07m while timbre is better on the O2.

Technicalities: Shiro Sagisu – Hundred years war (02:24-02:57), wider on the O2 but a lot deeper and more holographic on the 07m. Imaging, detail and separation are a lot better on the 07m and it does it without the tonality (brighter) advantage that the O2 has. Timbre and coherency are better on the O2.

Overall: The 07m pretty much beats the O2 in every single factor, the O2 is only the better iem when it comes to female vocals due to the tonality and timbre.



IEM: Fiio FD5, Elecom EHP-CAP20 tips L, stock cable 4.4mm

Bass: Djuro – Drop that bass (01:15-01:30), extends lower on the 07M with similar rumble. Punch quantity is higher on the FD5 and a bit tighter/faster but with similar texture. A bit better tonality on the 07M but better timbre on the FD5.

Hiroyuki Sawano – Pretenders (01:18-01:47), more quantity on the FD5 and a bit faster/tighter, a bit more texture on the 07M. A bit better tonality on the FD5 and timbre.

Metallica – fight fire with fire (01:11-01:52), cleaner on the 07M due to the lower bass quantity, similar speed/tightness and texture.

Mids: Hiroyuki Sawano – OldToday (01:25-01:52), more forward vocals on the 07M somewhat similar tonality but a bit better on the 07M as well as cleaner more detailed, better timbre on the FD5 though. Instrument tonality and timbre are better on the FD5 but cleaner and more detailed on the 07M.

Evanescence – Bring me to life (01:18-01:35), shoutier and peakier treble on the FD5.

Hiroyuki Sawano – Scapegoat (00:57-01:17), vocal tonality is a bit better on the 07M, cleaner and more detailed but timbre is better on the FD5. Instrument tonality and timbre are better on the FD5.

Treble: Linkin Park – Shadow of the Day (03:24-03:42), electric guitars are a lot sharper on the FD5, although with better timbre.

Hiroyuki Sawano – Lose (string version) (01:22-01:59), Cello tonality, texture and timbre are better on the FD5 but more detailed on the 07M. Violin tonality, timbre and clarity are better on the FD5, more detailed and better treble-extension on the 07M though.

Hiroyuki Sawano &Z (02:18-02:57), a bit better tonality on the 07M and more detailed, more natural timbre on the FD5.

Technicalities: Shiro Sagisu – Hundred years war (02:24-02:57), much wider on the FD5 and airier, deeper and a bit more holographic on the 07M. Imaging, separation and detail are better on the 07M. Timbre is better on the FD5.

Overall: The 07M is the better iem and more versatile, although the FD5 does have the airier treble, more impressive soundstage and better timbre.



IEM: Dunu Zen, Final Audio Type E tips LL, stock cable 4.4mm

Bass: Djuro – Drop that bass (01:15-01:30), extends lower and rumbles more on the 07M. Punch quantity is higher on the 07M but tighter, faster and more textured on the Zen. More tonally correct on the 07m, similar timbre.

Hiroyuki Sawano – Pretenders (01:18-01:47), more quantity on the Zen but cleaner due to it being faster and tighter, a lot more textured on the Zen as well. A bit better tonality on the 07M (due to the treble) and timbre is similar.

Metallica – fight fire with fire (01:11-01:52), cleaner on the Zen due to the faster/tighter bass, along with more texture and more quantity. More tonally correct on the 07M though.

Mids: Hiroyuki Sawano – OldToday (01:25-01:52), More forward vocals and more tonally correct on the Zen, but a bit more detailed (due to the micro-details) on the 07M, timbre is better on the Zen. Instrument tonality is better on the 07M and timbre is similar.

Evanescence – Bring me to life (01:18-01:35), shoutier and peakier treble, more fatiguing on the Zen.

Hiroyuki Sawano – Scapegoat (00:57-01:17), vocal and instrument tonality and timbre are better on the 07M, more detailed on the 07M but more forward vocals on the Zen.

Treble: Linkin Park – Shadow of the Day (03:24-03:42), electric guitars are a bit sharper on the Zen and more fatiguing due to the brighter tonality but does have better timbre.

Hiroyuki Sawano – Lose (string version) (01:22-01:59), Cello tonality is better on the 07M but a lot more textured on the Zen with a bit better timbre. Violin tonality and timbre are better on the Zen but better treble-extension and detail on the 07M.

Hiroyuki Sawano &Z (02:18-02:57), better tonality on the 07M and more detailed, similar timbre.

Technicalities: Shiro Sagisu – Hundred years war (02:24-02:57), a lot wider and deeper soundstage, more holographic on the 07M. Imaging, separation and micro-details are better on the 07M, similar macro-details and timbre.

Overall: The 07M is the better iem for the most part. But the Zen does have the better bass texture and female vocals, but with a big treble bottleneck.



IEM: Sony EX1000 (PEQ), Final Audio Type E tips LL, cable B7 4.4mm
Bass: Djuro – Drop that bass (01:15-01:30), extends a bit lower on the 07m but rumbles more on the EX1000. Punch quantity is higher, faster and tighter on the EX1000 and a bit more texture. More tonally correct on the 07M though but better timbre on the EX1000.

Hiroyuki Sawano – Pretenders (01:18-01:47), a bit more quantity on the EX1000, similar texture but cleaner because it is tighter/faster. Better tonality and timbre on the EX1000.

Metallica – fight fire with fire (01:11-01:52), Cleaner on the EX1000 due to the faster/tighter bass, similar quantity but more texture on the EX1000.

Mids: Hiroyuki Sawano – OldToday (01:25-01:52), vocal tonality is a bit better on the EX1000 and better timbre, but more detailed and a bit more forward on the 07m. Instrument tonality and detail are better on the 07m but better timbre on the EX1000.

Evanescence – Bring me to life (01:18-01:35), less peaky treble on the 07m.

Hiroyuki Sawano – Scapegoat (00:57-01:17), instrument and vocal tonality is better on the 07m and cleaner, similar vocal quantity but better timbre on the EX1000.

Treble: Linkin Park – Shadow of the Day (03:24-03:42), electric guitars are more fatiguing due to the brighter (more elevated treble) on the EX1000 but better timbre.

Hiroyuki Sawano – Lose (string version) (01:22-01:59), Cello tonality and detail are better on the 07m but timbre and texture are better on the EX1000. Violin tonality and timbre are better on the EX1000 but better treble-extension and detail on the 07m.

Hiroyuki Sawano &Z (02:18-02:57), better tonality, timbre and air on the EX1000 but better detail on the 07m.

Technicalities: Shiro Sagisu – Hundred years war (02:24-02:57), soundstage is vastly wider on the EX1000 but it is deeper and more holographic on the 07m. Imaging, separation and detail are better on the 07m but timbre is better on the EX1000.

Overall: The EX1000 is the iem prefer but the EJ07m is the more technical iem (except soundstage). (PEQ is needed on the EX1000 and it has zero isolation though, so it’s a bit hard to recommend it.)



IEM: LZ A7 (pop-red), Final Audio Type E tips LL, cable A3 4.4mm


Bass: Djuro – Drop that bass (01:15-01:30), extends a bit lower on the 07m but rumbles a bit more on the A7. Punch quantity is higher on the A7 but more textured on the 07m with similar speed/tightness. More tonally correct on the A7 but a bit better timbre on the 07m.

Hiroyuki Sawano – Pretenders (01:18-01:47), a bit more quantity on the A7 but more texture on the 07m, similar speed and tightness. More tonally correct on the A7 but a bit better timbre on the 07m.

Metallica – fight fire with fire (01:11-01:52), cleaner on the 07m due to it having less quantity, similar speed/tightness and texture though.

Mids: Hiroyuki Sawano – OldToday (01:25-01:52), Vocal tonality, timbre, clarity and detail are all better on the 07m and more forward vocals. Instrument tonality is a bit better (warmer) on the A7 but better timbre, detail and clarity on the 07m.

Evanescence – Bring me to life (01:18-01:35), vocal is similarly non-shouty, but peakier treble on the A7.

Hiroyuki Sawano – Scapegoat (00:57-01:17), Instrument and vocal tonality is better on the A7 and a bit better timbre on it as well, but more forward vocals, cleaner and more detailed on the 07m.

Treble: Linkin Park – Shadow of the Day (03:24-03:42), electric guitars are sharper on the A7 but a bit better tonality, timbre is better on the 07m.

Hiroyuki Sawano – Lose (string version) (01:22-01:59), Cello tonality, timbre and texture are better on the A7 but cleaner and more detailed on the 07m. Violin tonality is better on the A7 but more detailed, cleaner and better treble-extension on the 07m, timbre is a bit unnatural on both.

Hiroyuki Sawano &Z (02:18-02:57), tonality is a bit better on the A7 but cleaner and more detailed as well as a bit better timbre on the 07m.

Technicalities: Shiro Sagisu – Hundred years war (02:24-02:57), a bit wider on the 07m and a lot deeper, more holographic. Imaging, detail and separation are better on the 07m. Timbre is a bit better on the 07m.

Overall: The EJ07m is different from the A7 but I say they still pretty close (tonally) and the EJ07m could be seen as an upgrade to the A7.



IEM: Tin Hifi P1 Plus (PEQ), Sony EP-EX11 tips L, stock cable 3.5mm

Bass: Djuro – Drop that bass (01:15-01:30), extends lower on the 07m and rumbles a bit more on it. Punch quantity is higher on the P1P and is faster/tighter, more textured on the 07m though. Tonality is a bit better on the P1P as well as better timbre.

Hiroyuki Sawano – Pretenders (01:18-01:47), more quantity on the P1P as well as faster/tighter but more textured on the 07m. More tonally correct on the P1P as well as better timbre.

Metallica – fight fire with fire (01:11-01:52), cleaner bass on the P1P due to the faster/tighter bass, similar quantity but more texture on the 07m. More detailed on the 07m.

Mids: Hiroyuki Sawano – OldToday (01:25-01:52), Vocal tonality is better on the 07m and more forward, better timbre, detail and clarity as well. Instrument tonality and timbre are better on the P1P but more detailed and cleaner on the 07m.

Evanescence – Bring me to life (01:18-01:35), non-shouty vocals on both, a bit more fatiguing due to the brigher treble on the P1P.

Hiroyuki Sawano – Scapegoat (00:57-01:17), Vocal and instrument tonality and timbre are better on the P1P, more forward vocals, cleaner and more detailed on the 07m.

Treble: Linkin Park – Shadow of the Day (03:24-03:42), electric guitars are more tonally correct on the P1P, not-sharp either. Both have some unnatural timbre.

Hiroyuki Sawano – Lose (string version) (01:22-01:59), Cello tonality is similar, but more textured, cleaner, more detailed and better timbre on the 07m. Violin tonality is better on the P1P, but more detailed, cleaner and more treble-extension on the 07m. A bit unnatural timbre on both.

Hiroyuki Sawano &Z (02:18-02:57), a bit better tonality on the P1P and timbre, but more detailed and cleaner on the 07m.

Technicalities: Shiro Sagisu – Hundred years war (02:24-02:57), a bit wider and a lot deeper, more holographic on the 07m. Imaging, detail and separation are better on the 07m. Coherency is better on the P1P but similar timbre (not fully natural on either).

Overall: The EJ07m is the better iem for the most part, although the P1 Plus with PEQ is more suited for my library and preferences.



IEM: Dunu EST112, Elecom EHP-CAP20 tips L, stock cable 4.4mm

Bass: Djuro – Drop that bass (01:15-01:30), extends lower and rumbles more on the 07m. Punch quantity is higher on the 07m and more textured, but tighter/faster on the EST112. More tonally correct and better timbre on the 07m.

Hiroyuki Sawano – Pretenders (01:18-01:47), similar quantity, but more textured on the 07m while it is faster/tighter on the EST112. More tonally correct and better timbre on the 07m.

Metallica – fight fire with fire (01:11-01:52), cleaner on the EST112 due to the faster/tighter bass, similar quantity and texture.

Mids: Hiroyuki Sawano – OldToday (01:25-01:52), vocal tonality is better on the EST112, a bit better timbre on the 07m, similar vocal quantity, clarity and detail. Instrument tonality and timbre are better on the 07m but cleaner and more macro-details on the EST112 while micro-details are better on the 07m.

Evanescence – Bring me to life (01:18-01:35), a bit shoutier on the EST112 and more fatiguing due to the brighter treble.

Hiroyuki Sawano – Scapegoat (00:57-01:17), vocal and instrument tonality and timbre are better on the 07m. But cleaner, a bit more detailed and more clarity on the EST112.

Treble: Linkin Park – Shadow of the Day (03:24-03:42), electric guitars are more tonally correct on the EST112 but more fatiguing, similar timbre.

Hiroyuki Sawano – Lose (string version) (01:22-01:59), Cello tonality, texture and timbre are better on the 07m but similar detail and clarity. Violin tonality, clarity, texture and detail are better on the EST112 but better treble-extension and a bit better timbre on the 07m.

Hiroyuki Sawano &Z (02:18-02:57), better tonality and timbre on the 07m similar detail but more clarity on the EST112.

Technicalities: Shiro Sagisu – Hundred years war (02:24-02:57), a bit wider on the EST112 but deeper and more holographic on the 07m. Timbre, micro-details, separation and soundstage are a bit better on the 07m while macro-details are better on the EST112.

Overall: Very close in technicalities, so it depends more on what you want from them tonally speaking. If you prefer a more laidback/relaxing/warmer iem I would recommend the EJ07m but if you want something more energetic/brighter the EST112 is the more suited one, they are both versatile instead of being specialized into a few genres.



Conclusion: The EJ07M is a very well-tuned iem, which is a big surprise considering that both my previous exposure to LETSHUOER (AKA, Shuoer), the Tape and Tape Pro were either garbage or needed EQ before it was even listenable. If you want a laidback/relaxing, on the warmer side tribrid, the EJ07M is recommended. Although if you are someone after price/performance (value), It is harder to recommend due to how good the value is in the lower price range.

Graph:

Cable source:

https://docs.google.com/spreadsheet...zTm4ei7HEfP8AI1zxswrMw2ho/edit#gid=1801072063

Reference/test songs: