Mister Zeng

New Head-Fier
Letshuoer EJ09: Detailed and Immersive
Pros: ✔ Excellent technicalities
✔ Sounds amazing on orchestral tracks
✔ Great sub-bass presence and extension
✔ Detailed and precise imaging
✔ Great build quality
✔ Lightweight comfort
Cons: ❌ Fatiguing sound signature
❌ A bit shouty and can sometimes be sibilant
❌ Pricey investment
❌ Fit for larger ears
Hello everyone! 大家好!I'm Mister Zeng, your go-to audio reviewer, committed to providing you with unbiased and no-nonsense assessments. When it comes to audio gear, I'll cut through the hype and give you honest insights you can trust. No BS here, just genuine reviews to help you make the best decisions for your audio needs. AND MOST IMPORTANTLY, MAKING YOU LOVE AND ENJOY MUSIC THE WAY IT SHOULD BE EXPERIENCED!

Today, I'll be offering my insights on the LETSHUOER EJ09, kindly provided to me by @LETSHUOER Support , Ivy Gao for review purposes. Rest assured, all thoughts and opinions expressed are my own, entirely independent and unbiased. I maintain no affiliations and haven't been requested to provide any particular viewpoint in exchange for these units. Again, thank you very much for lending me this unit for review!

Just so you're aware, my review will focus solely on my personal sound impressions of this in-ear monitor (IEM). I won't delve into the details of the packaging or the accessories that accompany the unit. Additionally, I'll be sharing my personal equalizer (EQ) settings that cater to my specific sound preferences. I'd appreciate your thoughts on how these settings sound on your end - feel free to share in the comments below.

The packaging for the LETSHUOER EJ09 includes a silver cable, silicone eartips, a case, 3.5mm, connector, and the IEM itself. For the purposes of this review, I utilized the medium silicone eartips, and 3.5mm connectors and the stock cable that came with the product.

All of the audio gears that will be used have been burned in for at least 150 hours or more.

Here are the list of audio gears used for this review:

  • Topping A90 Discrete
  • SMSL SU-9N
  • Centrance DACport HD
  • Abigail Dongle
  • Apple Dongle USB C to Headphone Jack
Here are the list of tracks used for this review: (All tracks have been streamed at Qobuz and while other tracks have been bought for the FLAC file)
  • Shoot to Thrill - AC/DC
  • You Shook Me All Night Long - AC/DC
  • Back in Black - AC/DC
  • Highway to Hell - AC/DC
  • Immortality - Bee Gees feat. Celine Dion
  • Because You Loved Me - Celine Dion
  • Cupid (Twin Ver.) - FIFTY FIFTY
  • Gravity - John Mayer
  • Enough is Enough - Post Malone
  • Fragments of Time - Daft Punk ft. Todd Edwards
  • For Whom the Bell Tolls - Metallica
  • Enter Sandman - Metallica
  • Killing Strangers - Marilyn Manson
  • Sunflower - Post Malone feat. Swae Lee
  • Save Your Tears - The Weeknd
  • Always Remember Us This Way - Lady Gaga
  • Time - Pink Floyd
  • 雪落下的声音 - 陆虎
  • Seishun Kyousoukyoku - Sambomaster
  • Lay Me Down - Sam Smith
  • Let's Groove - Earth, Wind & Fire
  • September - Earth, Wind & Fire
  • Porco Rosso - Joe Hisaishi
  • Summer - Joe Hisaishi
  • Innocent - Joe Hisaishi
  • Nostalgia - Joe Hisaishi
  • When a Man Loves a Woman - Michael Bolton
  • Don't Stop Me Now - Queen
  • Radio Ga Ga - Queen
  • Come Together - The Beatles
  • Early Summer Rain - Yasuharu Takanashi
  • Mourning - Post Malone
  • AND MORE...

LETSHUOER EJ09 - A Review by Zeng




Who should consider the Letshuoer EJ09?
• Those who are seeking a superior soundstage and precise imaging.
• Those who love orchestral music and instrumentals.
• Those who favor a bright sound signature
• Those who value intricate audio details in their tracks.

Tonality (6.5/10)
The Letshuoer EJ09 offers an okay tonality. It has a neutral-ish bright sound signature that may lead to ear fatigue during extended listening sessions. However, this sound profile is particularly well-suited for instrumentals and orchestral tracks, aligning with Letshuoer's claim of being the "best in-ear monitors for classical music."

Upon testing with the orchestral track "Porco Rosso" by Joe Hisaishi, the EJ09 displayed crisp and detailed sound reproduction, creating a pleasing audio experience. I noticed that the IEM enhances the instrument sounds, by amplifying the upper frequencies. Thus, this effect may not always produce a natural sound.

Regarding bass performance, the EJ09 performs well, offering a balanced and satisfying bass response. EQ adjustments or low shelf filters are typically unnecessary. Tracks like "Kashmir" by Marcin showcase deep, satisfying bass, while "Killing Strangers" by Marilyn Manson demonstrates the IEM's bass quality in delivering deep and low sub-bass frequencies effectively.

However, when it comes to the midrange, there are some shortcomings. The EJ09 tends to sound a bit shouty, with upper mids that lean towards being overly bright. Male vocal performances may come across as sibilant and overly emphasized, while female vocals fare better but still might not align with personal preferences, appearing somewhat unnatural.

In summary, the Letshuoer EJ09 offers a neutral-ish bright tonality, making it an excellent choice for instrumental and orchestral tracks. However, it may not perform as well with other music genres, particularly Pop and EDM, where it can accentuate sibilance issues in tracks.

Bass (8.5/10)
The Letshuoer EJ09 showcases a commendable bass performance, earning a solid score of 8.5/10. It manages to deliver good sub-bass presence while maintaining a well-textured bass response. However, it may not deliver that "wow factor" often sought after in bassy tracks, such as "Kashmir" by Marcin and "Killing Strangers" by Marilyn Manson, where it appears to lean towards a more linear and neutral presentation, potentially leading to a somewhat unexciting bass experience.

Where the EJ09 truly shines is in reproducing organic instruments like drums and kickdrums. With this type of instrument, it excels by accurately rendering bass notes, staying perfectly neutral. It manages to capture the authentic sound of these instruments, ensuring a faithful representation.

In summary, the Letshuoer EJ09 offers a bass performance that is notably neutral and capable of accurately reproducing low frequencies. While it may not deliver a fun and party experience with bass-heavy tracks, its strength lies in faithfully portraying organic instrument sounds with precision and authenticity.

Mids (7/10)
The Letshuoer EJ09's midrange performance is rated at 7/10, displaying a mixed bag of qualities.

Starting with male vocals, they may not come across as entirely accurate to some listeners. The upper midrange appears emphasized, resulting in a somewhat spicy and sibilant quality on certain tracks like "Gravity" by John Mayer. Higher notes in male vocals, such as those in "Lay Me Down" by Sam Smith, can sound sharp and unnatural.

When it comes to female vocals, the EJ09 introduces added brightness that can accentuate the singer's voice. For instance, in Celine Dion's "My Heart Will Go On," this brightness can bring out the vocal but may also introduce a sense of coloration, potentially affecting the naturalness of the sound. Similarly, when listening to "一念執著" by 故歌和阿兰, both male and female vocals sound impressive but may be slightly overemphasized, which can cause ear fatigue for some listeners.

However, the EJ09 truly excels when rendering instruments. Its added coloration imbues instruments with liveliness and texture. In my favorite orchestral track "Porco Rosso" by Joe Hisaishi, all instruments are rendered with remarkable detail and texture, creating an immersive and enjoyable listening experience.

In summary, the Letshuoer EJ09's midrange performance has its strengths and weaknesses. While it may not excel with certain vocals due to its emphasis on upper mids, it shines when it comes to instrumentals, enhancing their liveliness and texture, particularly in orchestral compositions.

Treble (7.5/10)
The treble performance of the EJ09 is good. It's able to present small details in orchestral tracks, but it falls slightly short when compared to other IEMs in terms of revealing those finer nuances. Some listeners may find that it lacks a bit of sparkle in the top end, which can affect its ability to fully showcase the intricacies of high-frequency elements.

In my assessment of "Porco Rosso" by Joe Hisaishi, the piano and trumpets, along with all the other instruments, are rendered with a neutral and natural tone. While neutrality can be appreciated for accuracy, it may not deliver the same level of engagement and liveliness found in lower-end Letshuoer models, like the S12 Pro.

Furthermore, when listening to Metallica's "Enter Sandman," the hi-hats are presented fairly well at the start of the track but lack the shimmer that some listeners may seek. The treble extension, while decent, may not be as pronounced as desired.

In summary, the treble performance of the Letshuoer EJ09 is good but could benefit from a touch of added sparkle at the top end to enhance its ability to reveal finer details and provide a more engaging listening experience, especially for those who enjoy high-frequency nuances.

Imaging and Separation (10/10)
The Letshuoer EJ09 delivers exceptional imaging and separation, earning a perfect score of 10/10 in this regard.

When it comes to music, particularly orchestral tracks like "Summer" by Joe Hisaishi, the EJ09's imaging capabilities are truly impressive. It excels in precisely locating and positioning all the instruments within the soundstage, creating a highly immersive and detailed listening experience. From left to right, you can discern the exact placement of each instrument, and the separation between them is easily distinguishable.

The EJ09's imaging prowess extends beyond music and into other media. When used for gaming, I played GTA 5 and Valorant, the IEM offers precise imaging during shooting sequences. You can accurately locate your enemies, whether they are firing from behind or from the sides. This precision enhances your gaming experience by providing a clear sense of direction and positioning.

For movie enthusiasts, especially those watching action-packed films like John Wick with bullets firing from every direction, the EJ09 continues to shine. Its ability to spatially represent sound allows you to fully immerse yourself in the movie's audio, making the experience truly impressive.

In summary, the Letshuoer EJ09 excels in imaging and separation across various media, including music, gaming, and movies. Its precise localization of sound sources and clear separation between them contribute to an outstanding auditory experience, earning it a perfect score of 10/10 in this category.

Soundstage (9/10)
The Letshuoer EJ09 boasts an impressive soundstage, earning a solid score of 9/10 in this aspect.

Upon listening to "Thriller" by Michael Jackson, the EJ09 immediately demonstrates its prowess. The track's initial moments, featuring footsteps and howling, come to life with a remarkable sense of space and depth. The audio becomes three-dimensional, providing a truly immersive experience.

In my favorite orchestral track, "Porco Rosso" by Joe Hisaishi, the EJ09 shines again. It masterfully presents the concert stage, allowing you to feel fully immersed in the performance. The spatial representation of the music enhances the overall listening experience.

Switching to gaming and movies, the EJ09 continues to excel. In GTA 5, the bustling streets come to life with the chatter of people and the passing of cars, creating a convincing three-dimensional audio experience. Additionally, the distant sounds of explosions in the game are accurately portrayed, allowing you to gauge their distance with precision.

When testing the IEM with Valorant, similar results are achieved. The EJ09's precision shines through as it accurately represents the dynamics of grenade throws and gunfire, enhancing gaming experience by providing clear and spatially accurate audio cues.

In summary, the Letshuoer EJ09 offers an impressive soundstage across music, gaming, and movies. Its ability to create a three-dimensional audio environment adds depth and immersion to various forms of entertainment, earning it a commendable score of 9/10 for its soundstage performance.

EQ Performance (9/10)
The EJ09 responds well with EQ. With the application of EQ, it becomes possible to fine-tune the EJ09's sound signature. Adjustments such as reducing the peak around 5kHz and 6kHz while adding some sparkle at the top end can be made. These EQ modifications enable you to maintain the core sound characteristics of the IEM while reducing listener fatigue.

The resulting sound is not only more comfortable for extended listening sessions but also enhances the overall audio quality, providing a highly enjoyable listening experience. If you're looking to customize the EJ09's sound to better suit your preferences, experimenting with EQ settings can yield excellent results.

In conclusion, the Letshuoer EJ09's responsiveness to EQ allows for personalized sound adjustments that can significantly improve the listening experience. With the right EQ settings, you can fine-tune the IEM to match your specific preferences and enjoy an enhanced sonic experience with reduced fatigue.

Comparison to other IEMs

Unique Melody MEST MKIII

Comparing the Letshuoer EJ09 and the Unique Melody MEST MKIII, it's important to note that the price difference between the two is significant, with the MEST MKIII being twice the price of the EJ09. However, given their notable technical capabilities, it's still valuable to assess their performance.

Starting off, both Both the EJ09 and the MEST MKIII exhibit impressive technical performance, particularly in terms of imaging and soundstage. Both IEMs provide accurate and wide soundstages, but the MEST MKIII has the edge in creating a more immersive experience. The MEST MKIII effortlessly reproduces tracks, making it easier for the listener to perceive sounds coming from distinct directions. In contrast, the EJ09's imaging is excellent but may require a bit more focus to pinpoint precise sound placement.

While both IEMs perform well in the soundstage department, the MEST MKIII still holds a superiority, albeit not by a substantial margin. Most consumers may not notice a significant difference between them, as they both offer excellent soundstage dimensions. However, to more discerning listeners, the MEST MKIII may provide a wider and taller soundstage, enhancing the 3D illusion, especially evident in live albums like "Hotel California – Eagles (Hell Freezes Over, MTV)."

In summary, the Letshuoer EJ09 and the Unique Melody MEST MKIII share remarkable technical capabilities, but the MEST MKIII's higher price tag does translate into a more effortless and immersive performance in terms of imaging and soundstage. While the differences may not be apparent to all listeners, those seeking the pinnacle of audio quality may find the MEST MKIII to offer a better tonality and superior listening experience, especially in creating a more convincing spatial representation of sound.

Letshuoer S15
Both the S15 and the EJ09 deliver great technical performance. However, the EJ09 stands out in terms of imaging and soundstage. It excels in creating a more immersive and spacious auditory experience, making it the preferred choice for those who prioritize these aspects in their audio setup.

Tonality is where the choice between the two may come down to personal preference. The S15 offers a balanced-neutral sound signature, appealing to those who prefer a more even and natural audio presentation. On the other hand, the EJ09 leans towards a bright-neutral sound, making it suitable for individuals who enjoy a more vibrant and energetic audio profile. In terms of build quality, the EJ09 takes the lead with its superior construction. It offers a more robust and durable build, ensuring longevity and reliability over time.

In summary, while both the Letshuoer S15 and the Letshuoer EJ09 excel in technical performance, their tonality and build quality set them apart. The S15 appeals to those seeking a balanced-neutral sound, while the EJ09 caters to those desiring a bright-neutral sound with exceptional imaging and soundstage. Additionally, if build quality is a crucial consideration, the EJ09 stands out as the more durable option.

Letshuoer S12 Pro
The Letshuoer S12 Pro appeals to those who favor a tonality characterized as neutral-bright and balanced. This sound signature caters to listeners who prioritize tonal accuracy and a more even representation of audio frequencies. On the other hand, the Letshuoer EJ09 offers a bright-neutral sound signature, which may be preferred by those seeking a more vibrant and energetic audio profile. Your choice between these two IEMs largely depends on your tonal preference.

The Letshuoer EJ09 stands out with its exceptional technical performance, particularly in terms of imaging and soundstage. It provides an immersive and spacious auditory experience, making it the preferred option for those who prioritize these aspects. The S12 Pro, while still offering commendable performance, may not match the EJ09 in these technical aspects.

Considering my satisfaction with the S12 Pro's tonality and its potentially lower price point, it becomes a strong contender for my preference. If tonality aligns closely with your ideal sound signature and you find the price point attractive, the S12 Pro could be the preferred choice.

In summary, your choice between the Letshuoer S12 Pro and the Letshuoer EJ09 depends on your specific preferences. If tonality is your primary concern and you appreciate a balanced, neutral-bright sound signature, the S12 Pro may be the better option. However, if you prioritize exceptional technical performance, especially in terms of imaging and soundstage, the EJ09 shines in these aspects. Ultimately, the decision comes down to your individual preference and priorities in audio quality.

The Letshuoer EJ09 shines as an IEM that excels in orchestral music and instrument-based tracks. Its performance truly immerses the listener in the music, providing a remarkable illusion of being present on the stage. It lives up to its claim of being the "best instrument IEM for classical music" with its outstanding soundstage and imaging.

However, the EJ09's price tag of $1,049 may be a deterrent for some potential buyers, especially considering its tonality, which may be perceived as mediocre. This steep price may not align with the preferences of all audiophiles.

In summary, the Letshuoer EJ09 is a superb choice for those who have a deep appreciation for orchestral and instrument-focused tracks and value the immersive experience it offers through its soundstage and imaging. However, if you're seeking a more budget-friendly option without compromising on overall quality, the Letshuoer S12 Pro could be a compelling alternative. Ultimately, your decision should be based on your specific musical preferences and budget considerations.

Click here --> LETSHUOER EJ09


Again, I would like to express my gratitude to @LETSHUOER Support , Ivy Gao for providing me with the review unit of the LETSHUOER EJ09. I want to clarify that all the thoughts and opinions expressed in this review are entirely my own, and I have not received any sponsorship or incentive to promote or favor this IEM in any way. It is important of me to provide an unbiased and honest assessment of the product.
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500+ Head-Fier
Pros: △ Solid build construction on its high quality resin shell chassis, quite light too.
△ Substantial amount of ear tips to choose from.
△ Rigid metal alloy shell chassis and even a storage bag for it
△ Good quality stock cable.
△ Capable neutrally-tuned set.
△ Precise and well-balanced bass response.
△ Good sub-bass presence.
△ Excellent midrange quality
△ Adequately textured, clean, transparent and evenly neutral midrange
△ Well-articulated and expressive vocal and rendition of instruments proper tonal colour especially on strings, percussives and woodwinds.
△ Shimmering and crisp treble response
△ Extremely detail sounding with great clarity.
△ Airy and copious amount of sparkle on its brilliance part on its frequency range spectrum.
△ Spacious and atmospheric sound/speaker stage dimension.
△ Impressive separation and layering capability.
△ Astonishing flair on detail retrieval.
Cons: ▽ Wishing for better cable, ideally a modular one.
▽ Sorry bassheads, The tuning on this one is absolutely not for you if you want a more authoritative and boomy bass response.
▽ Vocal note weight on some male voice types are quite lacking of warmth, volume and depth.
▽ A cautious reminder for listeners who are quite treble-sensitive, peaky upper-mids and presence part of the treble frequency might be too intense on their high frequency threshold.
▽ Minor occurrences of some overemphasised hiss on sibilant-laden tracks.

“Music is the one incorporeal entrance into the higher world of knowledge which comprehends mankind but which mankind cannot comprehend.”

~~Ludwig Van Beethoven, German composer and pianist during the Classical period.

Euphonic means to have a pleasant and sweet voice quality. Juncture is a contact, joint or connection between two or more things. That's how I interpret the EJ09's letter initials, Euphonic Juncture as it gives a very pleasant sound produced by the connection of well-implemented high quality drivers from its transducers.

This is actually my second product review of a TOTL (Top of the Line), over a grand dosh flagship IEM from LETSHUOER. I know that this one is considered as an old model but this set is one of the hidden gems that is quite still very relevant up to this day that needs a further reintroduction to the portable audio enthusiasm sphere.


Since I already reviewed many LETSHUOER products so no need for me to do another introduction about this audio company. Due to the successful introduction of their first "tribrid" model, The LETSHUOER EJ07, they decided to release another hybrid driver IEM with more additional balanced armature drivers. What I have here in my hand right now is their LETSHUOER EJ09, This was actually LETSHUOER's first foray on a TOTL flagship range in 2021 and like all TOTL sets, it has hybrid driver configuration but this one, like the EJ07 has also three types of drivers that were implemented inside.


The drivers that were implemented on EJ09 are dynamic driver, balanced armature driver and electret/"electrostatic" driver. On each side of its shell transducers, there is a single 10mm kevlar dome, liquid silicone dynamic driver which I'm quite familiar with this kind of driver due its fast, tactile and clean bass response, a combination of three (3) Knowles balanced armature drivers and one (1) Sonion balanced armature driver for mid bass up to high frequencies to deliver a natural, crisp and detailed sound, and a Sonion EST65QB02 electret/"electrostatic" which has quadruple microdrivers based on a electret technology with a transformer or energiser for better air and sparkle on ultra high frequencies that apparently can reach up to 70kHz. These drivers were connected into a penta-way crossover through four(4) acoustic tubes for better separation, seamless flow of signal output and less chance of having abnormal phasing issues. It also noted that it has a micro electronic frequency divider PCB acting as passband circuit regulator for handling capacitance and induction for each type of driver.


These drivers and other components were encapsulated in a rather large UIEM-style, imported (probably from Austria or Germany) high quality, medical grade resin shell chassis. These shell chassis are light, durable and will offer a better passive noise isolation. It has black coloured resin shell from its cavity base and faceplate, then on its faceplate there is a glinting gradient of colours that reminds me of some semi-precious gemstones. Every shell chassis was serialised with production batches and it has an unusually large vent hole for escaping excess air pressure generated from its high performance drivers. Like all LETSHUOER products, it uses a proven and well-tested 2-pin connector as its interlocking mechanism for its cable.



The cable that was included in LETSHUOER EJ09 is a decently thick, 2-core monocrystalline copper and silver plated copper wirings that are insulated with a L-shaped termination plug where you can choose two types of termination upon purchase either 3.5mm S.E. or 4.4mm balanced.


Of all LETSHUOER products, despite its flagship status, LETSHUOER EJ09 is quite modest and straightforward when it comes to product packaging and presentation. But at least it has a sufficient amount of inclusions inside of its grey-coloured square cube box.


Here are the following inclusions that were included inside the box:

■ Pair of LETSHUOER EJ09.

■ Stock cable with a 3.5mm termination plug.

■ Circular solid aluminium IEM case.

■ Velvet storage bag.

■ 3 pairs of opaque balanced bore ear tips in different standard sizes.

■ 3 pairs of white-coloured wide bore ear tips in different standard sizes.

■ 2 pairs of memory foam ear tips.

■ Cleaning brush

■ Some paperwork like warranty card, quality control card and instruction manual.


With an array of drivers that this set might be harder to drive but no, it wasn't this case. The fact that EJ09 is actually easy to amplify means that I only put it in a low gain mode in my DAPs. Even in my LG phones, This set is quite already a vivid and full-range sounding at medium volume level in a normal impedance mode at around 40-45/75 volume steps.


To determine its tonality, The LETSHUOER EJ09 has that neutral sound profile which I can classify as a "reference-neutral" in my own subjective sound signature vocabulary. It has more emphasis on midrange and high frequencies with a right amount elevation on low frequencies that can also also be categorised as neutralish-bright.



My initial impression of this set is that it has a good presence on bass response for a neutral-tuned IEM. It is quite well-balanced that it has proper sub bass while having an ample mid bass presence to give a decent texture on some instruments and vocals. To expound clearly the details, the overall bass quality of EJ09 is between tight to punchy with sufficient volume, depth and texture while having tidy and well-segregated from other frequency ranges that will work most likely for monitoring and mixing.

It definitely has a good rumble and reverberations as I visibly hear and feel it from sub bass-focus instruments like synthesisers, low tuned guitars, drum machines and octabasses. Mid bass has an adequate texture and density on its note weight to give a rather natural tone though don't expect a much darker tone from it. Bass guitars have a resonant and rasping sound as I discerningly hear it from every stroke and strumming on its string notations either slapping, fretless, tapping or any fingering techniques that bass guitarist's employ. Bass kick drums have a sustaining, sonorous and resonant sound that is able to keep up some double bass drum speed from jazz or some extreme metal tracks. Bass trumpets have a fuller yet tense with enough dark timbre from them as a fundamental note for lower octaves and registers on brass instrument section on an orchestral track. Bass-baritone vocals seem to have a decent depth and heft to give a decent low resonant voice with its dense and espresso-like texture on its tone.

Tracks tested for bass register:


● New Order - True Faith
● New Order - Blue Monday
● Erasure - Love To Hate You
● Camouflage - Great Commandment
● Kraftwerk - Das Model


Bass Guitars

● Les Claypool (Primus) - My Name is Mud
● Patricia Morrison (Sister of Mercy) - Lucretia, My Reflection
● Cliff Burton (Metallica) - Motorbreath
● Steve Di Giorgio (Sadus) - Desolator
● Kathy Valentine (The Go-Go's) - Fading Fast
● John Deacon (Queen) - Another One's Bite A Dust

Bass Kick Drums

● John Bonham (Led Zeppelin) - When The Levee Breaks
● Fredrik Widigs (Marduk) - The Blond Beast
● Gene Hoglan (Dark Angel) - Death is Certain (Life is Not)
● Dave Lombardo (Slayer) - Raining Blood
● Jimmy Marinos (The Romantics) - Talking In Your Sleep

Bass Trumpets

● Berlin Philharmonic Orchestra - Richard Wagner - Walkürenritt (Ride of the Valkyries)
● New York Philharmonic Orchestra - Antonin Dvorak - Symphony 9, From The New World
● Put3ska - Manila Girl


● Andrew Eldritch (Sister of Mercy) - Lucretia My Reflection
● Peter Steele (Type O Negative) - Black No.1
● Louis Armstrong - What A Wonderful World
● Barry White - Never, Never Gonna Give You Up
● Bryn Terfel with The Royal Opera House - Mussorgsky's Boris Godunov


This is one of the strongest assets of the EJ09, the quality of its midrange frequency. It has a neutral, clear, immaculate and forward presentation that gives a quite vivid, precise and detail on vocals (primarily on female vocals) and most instruments' note weight.

On vocals, It seems that almost all female voice types will be more beneficial on how this set was tuned. It will give more expressive, emotional and articulation on vocals with higher octave and pitch. I'll do on male vocals first as this is my usual pattern in audio reviewing on determining the qualities of vocals. Baritone vocals have a milder tone that both light and lyric baritones will be more benefited as they have a sweet, enough warmth and smooth, but on kavalier baritone, dramatic and verdi baritone vocals, due to the vocal texture that EJ09, they sound more milder as they have a tad mellow, velvety and plush in contrast the kavalier baritone has that steely voice while dramatic has robust and fuller tone and verdi has a darker timbre on which this set is somewhat lacking of. Tenors have a sufficient weight and volume on vocals, a rich, clear and bright tone to give that spiciness, brassy and ringing sound that we want on tenor singers. Leggiero tenors have light and full chesty vocals and lyric tenors are bright and graceful which sound quite natural on EJ09. The other tenor voice types like Spinto, Dramatic and Heldentenors have a rather rich, brassy and sufficiently energetic sound on its ample vocal weight and volume despite the transparent nature of this set. Countertenors will sound remarkable on this IEM on how it portrays their distinctive agile, smooth and tenderness on their voices on hitting their falsetto range. On female vocals, Contraltos have a good deep and rich timbre on EJ09 as they sound smoky and husky as I'm enjoying the lusciousness of their vocal quality. The remaining two female vocal types are where the LETSHUOER EJ09 is truly excellent as it gives a vivid, well-articulate, energetic and lively tone, and these are the mezzo-sopranos and sopranos vocals. Mezzo-sopranos have a velvety, fiery and lustrous sound from them to give me a feathery feeling. Sopranos seems to have bright and sparkling vocal characteristics as they have a shimmering, silvery and crystalline sound from how the EJ09 projects it. From dramatic to coloratura sopranos, This set will deliver that energetic and spacious vocals effortlessly without any hindrance.

On instruments, almost all instruments that I've heard sound very detailed and somewhat life-like particularly on strings, woodwinds and some percussives. Strings like guitars have a lingering, crisp and bright tone that acoustic guitars should sound like in my opinion and it is also applicable to the electric guitars too, and then on violins, they have a vibrant, brilliant and metallic sound that will a tonal diversity and compactness when played along with instruments in string sections in typical orchestral arrangement. Woodwinds like concert flutes, piccolos, clarinets and saxophones, concert flutes have an airy, ethereal and silvery sound while piccolos have a penetrating and brilliant tone. Both clarinets and saxophones have a reedy and lively sound from them. On percussion instruments, snare drums have clear, bright, popping and sometimes metallic sound from them, kettledrums have dry and resonant sound on every hitting of their mallet, Field drums have a hard and menacing sound while tom drums have a resonant sound with good incisive thudding. Pianos appears to have a brighter and crisper tone. On brasses like trumpets, horns and trombones, trumpets have full, brilliant and intense sound while horns also have a bright and intense sound, and then trombones have dramatic and penetrating sound to give that particular brassy tone.

Tracks tested on this category:



● Robert Merrill - Largo al Factotum
● Dmitri Hvorostovsky - Handel - Ombra Mai Fu
● Scott Weidland (Stone Temple Pilots) - Still Remains
● Eddie Vedder (Pearl Jam) - Daughter
● David Bowie - A Man Who Sold The World


● Luciano Pavarotti (The Three Tenors)- O Paradiso
● Placido Domingo (The Three Tenors) - Nessun Dorma
● Jose Carreras (The Three Tenors) - Granada
● Freddie Mercury (Queen) - Killer Queen
● Robert Plant (Led Zeppelin) - The Rover


● Andreas Scholl - Handel - Ombra Mai Fu
● Philippe Jaroussky - Vivaldi -Tecum Principium
● Prince - When The Doves Cry
● Robert Gift (Fine Young Cannibals) - She Drives Me Crazy
● King Diamond (Mercyful Fate) - Melissa


● Nina Simone - Love Me Or Leave Me
● Tracy Chapman - Fast Car
● Toni Braxton - Unbreak My Heart
● Sade - Smooth Operator
● Annie Lennox - No More I Love You's
● Anggun - Snow On The Sahara


● Cecilia Bartoli - Handel - Ombra Mai Fu
● Nadja Michael - Bizet - Carmen
● Dolores O'Riordan (The Cranberries) - You and Me
● Sharon Den Adel (Within Temptation) - The Cross
● Andrea Corr (The Corrs) - What I Can Do
● Edie Brickell - Good Times
● Ella Fitzgerald - Christmas Island


● Diana Damrau - Mozart - Queen of the Night Aria - Die Zauberflöte
● Olga Pereyatko - Mozart - Or Sai Chi L'onore
● Eva Cassidy - Fields of Gold
● Tarja Turunen (Nightwish) - Sleeping Sun
● Mariah Carey - Always Be My Baby
● Alison Krauss and Union Station - A Living Prayer



● Felix Ayo (Violin) - Vivaldi- Summer III. Presto: Tempo impetuoso d'Estate
● The Eagles - Hotel California (Hell Freezes Over)
● Malice Mizer - Au Revoir
● Yngwie Malmsteen - Arpeggio From Hell
● John Frusciante (Red Hot Chili Peppers) - Snow (Hey Oh)
● Kirk Hammett (Metallica) - Motorbreath


● Ian Anderson (Jethro Tull) - Living In The Past
● Icelandic Philharmonic Orchestra - Mozart - Flute Concerto No.1 in G-Major, K. 313.
● L'Opera de Paris - Mozart - Die Zauberflöte - Act I : Overture
● Ensemble Matheus - Vivaldi - La Tempesta di mare
● Men At Work - Down Under


● Les Percussions de Strasbourg - Kazimierz Serocki - Continuum
● Ottoman Mehter - Hücum Marsi
● Neil Peart (Rush) - Tom Sawyer
● Peter Bitelli (Riot) - Warrior
● Jonathan Moffett (Michael Jackson) - Billy Jean
● Flo Mounier (Cryptopsy) - Slit Your Guts


● Bundeswehr Staff Band (Trumpets, Trombones and Tubas) - Preußischer Präsentiermarsch
● Berlin Philharmonic Orchestra - Richard Wagner - Walkürenritt (Ride of the Valkyries)
● Ottoman Mehter - Plevne Marsi
● The Specials (Trombone)- A Message To You Rudy
● Bad Manners (Trumpet and Trombone) - Lip Up Fatty


treble response is definitely on a brighter side as it has crisp, excellent clarity and extreme detail capabilities as it also has a superb presence that executes a well-rendered attack on instruments and a well-articulate vocal presentation. It also has an outstanding quality of its brilliance treble region as it possesses a good amount of harmonics for more sparkling and well-extended airy treble. If you want that ambient and atmospheric effect in your listening, this set will fit and will perfectly execute it.

Despite its excellent treble response, there are some probable concerns that might be a drawback to some listeners particularly on treble-sensitive folk out there. There's a hint of sibilance whenever I played some tracks which were known to be sibilant-laden ones but I still consider it tolerable and fairly controlled. As I really don't think that EJ09 has a harsh and strident sound but that peak on upper mids to presence treble region might be to boosted and too energetic to some treble-sensitives but for most treble-heads, its a bliss for them.

Regarding some instruments, it gives a more shimmering, glistening and sizzling sound on cymbals while the hi-hats have that distinguishing sound that has shortened buzzing tone. Glockenspiels have that bright, shimmering and sometimes, piercing sound while celestas have bright and silvery sound on hitting its highest octave.

Tracks tested on category:

● Lars Ulrich (Metallica) (Cymbals and Hi-hats) - Motorbreath
● Kami (Malice Mizer) (Cymbals and Hi-hats) - Au Revoir
● Yoshiki (X-Japan) (Cymbals and Hi-hats) - Blue Blood
● Various artists (Celestas) - Bach - Suite No.3, BWV 1068
● Royal Concertgebouw Orchestra (Glockenspiels) - Shostakovich - Symphony No.15 in A major, Op 141


definitely takes an excellent and perfect mark on this category.

Sound/speaker stage on this one is indeed impeccable as it has a pretty expansive lateral sound field with excellent height ceiling and depth that gives me an incredibly spacious and broad headroom which is beyond my aural sphere.

Projecting its imaging presentation, EJ09 has three-dimensional and atmospheric sound field dimensions. I can absolutely perceive and pinpoint the precise placements of vocals and instruments within the premises of my head shadow. Separation of instruments and vocals as it has a good gaps and spacing on each other while it has a very competent layering capability as tonal and frequency layers of instruments and vocal are well-defined and delineated that were arranged in a sonic canvas. Playing a very complex multi-instrumental tracks will be an easy-peasy for this set as I've tried it from jazz ensembles to orchestral tracks and EJ09 is able to play it effortlessly.

As for driver cohesion, LETSHUOER EJ09 performs fantastic as its dynamic drivers have faster transient speed with good gradual decay, balanced armature drivers doesn't have that unwanted resonance effect while delivering a clarity and detailed sound while the electret drivers seems to deliver an accurate yet energetic due to its high sensitivity nature.

On defining its resolution capabilities, EJ09 has excellent micro-dynamics and fairly good macro-dynamics. It has good notation attacks, better transients on handling sustain and decay and sufficiently textured note weight. Detail retrieval is quite sharp on extracting a substantial amount of details and nuances of information from an audio track.



● Like its older predecessors, EJ07M is also a tribrid driver configuration but difference between them that it has lesser number of balanced armature drivers and it shells are made of aluminium alloy and less chunky compared to humongous, resin shell chassis of EJ09 albeit it has stubby nozzle. EJ07M is way more cheaper compared to the EJ09 but it has way more better product presentation.

● Tonality-wise, both sets are neutral sounding. Bass response of EJ07M is quite punchy with good reverberation from its sub-basa but it has a less dense midbass texture. Midrange have similar qualities but compare to EJ09 it is less brighter and less crisper. As for its treble quality, EJ07M has smoother and balanced response that makes it more acceptable to treble sensitives.

● As for technical performance, Both are comparable but the difference were that EJ07M sound/speaker stage is less spacious and micro-dynamics is a bit less remarkable compare to EJ09.



● It is on the same price range with EJ09 and also has similar build in which GAEA also has shell chassis made of high quality resin. But the difference are that it has proprietary connector as its detachable mechanism but it has an high quality stock cable which is Effect Audio known to make premium upgraded cables.

● The sound signature of GAEA is your typical Harmanish type of tuning which is a lean U-shaped. It focuses more on sub-bass than mid-bass that will give less note weight on bass instruments. It has a recessed and leaner texture on its midrange presentation compare to the EJ09. It is also quite capable on rendering some female vocals just like the EJ09. Treble quality is quite similar but it is quite less airy and it has more instances on having a jarring sound and sibilance on its playback.

● The technical capabilities of GAEA is rather average to above average which makes it quite inferior compared to the EJ09. It has a narrower sound/speaker stage width span, above average height reach and good depth which gives me a bit congested feel on it. It also noted that I remember its layering capability is not remarkable but rather good enough for midrange set but there are some midrange sets has also good layering capabilities which makes the GAEA's shortcomings "unreasonable" for its asking price as I expect better technical capabilities on a over a grand set.


● Another TOTL-set and a bit more pricey compare to EJ09. A quad-brid monster as it has a bone conduction driver on its internals for added more ambient effect and its shell chassis are mostly made of carbon fiber which is more solid and denser compared to a resin material. It also has a better quality cable as it has thicker profile and made of rare materials albeit it is quite unwieldy and less supple.

● MEST MK.III has a balanced-neutral which make it more versatile almost type of music genre with exception of hip-hop and other bass boost genres. It has a more solid bass response as it has more noticeable mid-bass texture. On midrange, it has a tad more texture on its lower midrange part compared to EJ09 as brasses and baritones have a richer and fuller tone from it. It also has a bright treble response but to my surprise, it doesn't have a hint of either sibilance or harshness from it.

● Overall, it has a very similar technical performance but here are some differences that I will pointing out. MEST Mk.III has a more depth on its sound/speaker stage and a more solid macro-dynamics. The rest of their technical aspects are on par and equal in my opinion.

Here are some summaries that should be highlighted on the LETSHUOER EJ09. It is quite an old model but still capable to deliver its tonal prowess. Like most current existing flagship products, EJ09 has "tri-brid" driver set-up and it was tuned neutrally specifically for audio enthusiasts and audio professionals alike.

As I concluded this product assessment, LETSHUOER EJ09 is still a very capable set that can deliver a well-tuned sounding set with extremely capable on its technical performance that makes it even more valuable that should be paid attention from portable audio connoisseurs and aficionados, at least they should try to test or add it on their collection for reference sound. With a superb clarity, very competent on detail capability and a remarkable high resolution aspect, LETSHUOER EJ09 is truly a veteran and an old guard flagship of TOTL sets out there.

LETSHUOER EJ09 is still available on online stores of your favourite and preferred audio vendors. All links down below are unaffiliated ones.




And also, If you are in the Philippines, LETSHUOER EJ09 is now available in Egghead Hi-Fi Gallery at Shangri-la Plaza.


Here are my previous reviews on other LETSHUOER products:

◆ LETSHUOER GALILEO (First impressions)


◆ LETSHUOER CONDUCTOR (First impressions)







PLUG TYPE: 3.5mm. 4.4mm

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*


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

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**Note: I'll revised this one later as I will do full and thorough review of this one. Stay tuned.**
wow, very detailed review mate.
and again: Respect for being able to spot Pros and (even more) Cons!
im a big fan of EJ07M by the way. one of few harman IEM i enjoy. thanks to EST and this DD too!


100+ Head-Fier
A technically strong set with treble and upper mid-range focus
Pros: - Very clear and detailed treble
- Excellent treble extension for near-perfect technicalities
- Forward upper mid-range and female vocals
- No sibilance
- Cohesive low-end
Cons: - Lacking in bass quantity
- Slightly blurred lower-mid's
- Higher-than-usual Chi-fi price
- Caution for the treble-sensitive

The EJ09’s are Shuoer’s latest entry into the flagship tribrid market. Sporting one 10mm dynamic driver, 3 Knowles balanced armatures, 1 Sonion BA, and 4 Sonion electret drivers, there is a lot crammed into this shell. At the rather comfortable $1,260 for the UIEM version and $1,425 for the CIEM version, there better be a lot in this IEM. Luckily, Shuoer has done a very admirable tuning this complex mix of drivers into a set that is bright and detailed and I’d characterize the EJ09’s as a “reference”-class monitor [despite hating that word].

The Shuoer EJ09 CIEM was payed by me entirely out of pocket at full retail price. I have not and will not be compensated in any way for this review. All thoughts are my own after listening to the EJ09’s for around a week nonstop.

This review is an extension to my initial thoughts over at the
Impressions Thread

I ordered the CIEM version directly through Shuoer with custom faceplate artwork and custom work on the shell itself. The stock universal version does not look like this for obvious reasons.

The Basics
The EJ09’s come in Shuoer’s new upgraded packaging and carrying case. You get a square gray box that is built much like an Apple product’s box. Inside you’ll find a generous combination of S/M/L silicone eartips in two materials, as well as M/L foam tips. Further down, you’ll find a very hefty milled aluminum case that’s unbranded apart from the Shuoer logo on the bottom. This is one of the sturdiest stock IEM cases I’ve had yet, but as a complete block of aluminum, that’s to be expected. The insides are lined with a silicone or rubber padding material to keep the IEM’s damage free. The case is way too big to be pocket friendly, but hey, it’s a nice to have. You also get a tiny little brush.


The IEM’s also come with a brand new pure silver cable exclusive to the EJ09’s. The conductors are pure monocrystalline silver, surrounded by a silver plated copper shielding. Despite using primarily plastic hardware across the cable, it actually feels rather nice in the hand and is quite durable. The plastic is optically clear, a nice departure from the usual plastic connectors. The cable is soft and flexible in the hand and has a very nice feel to it overall. However, there is definitely room for improvement here, the cable retains kinks depending on how it’s stored. My current cable still has some pesky bends that haven’t completely flattened out despite being used for one week already. As well, the cable itself is a little bit on the thin side which goes against my preference for larger and thicker cables. Owing to the thinness, the cable picks up more electromagnetic interference from nearby cellphones, microwaves, Tesla coils, etc… than other cables I’ve tried in my collection. Neither of those things are dealbreakers though, and I still like this cable a lot.


The Sound — Listening in Isolation
My initial impressions on getting the EJ09’s were a little rough. However, after two days of continuous burn in, the EJ09’s seem to have settled down into a very nice signature. Overall, this is a bright IEM—no getting around that. The 09’s are treble-forward and therefore present with a liveliness and energy that steals your attention.


The Treble
The standout of the EJ09’s is certainly its excellent treble response and outstanding extension. Looking at the forest before the trees first, the relatively high pinna gain on the 09’s should caution those that are treble-sensitive to turn away. The tiny peak at 3kHz is occasionally noticeable, but the peak definitely calmed down after burn-in. The smooth elevation between 1kHz and 3kHz makes the set overall sound very crisp and light. The electrets carry their weight throughout the upper whistle register past 8kHz with ease, unlike some sister implementations. The 5kHz to 8kHz right on the boundary of the crossover remains sibilance free and presents a smooth and brilliant sound.

Now, for the trees. One of the immediately apparent things with the 09’s is the clarity, forwardness, and air they present busy passages. (See Hands Like Houses, This Ain’t No Place for Animals). The breakdown beginning at 1:28 is where many lower clarity sets struggle to maintain definition and a feeling of individuality of notes. This is especially true when high energy cymbal strikes are thrown into the mix at 1:34, in the background of the ridiculously intense passage. Many less-defined sets blur the entire passage into a singular tsunami of sound rather than individual attacks. Even compared to the EJ07’s [an already detailed set], the EJ09’s presented the background cymbals with a lightness and airiness that gets lost on the 07’s.

We find a very similar results on entirely synthetic tracks where clarity comes in handy. (See Seori, Trigger; Itzy, Not Shy; Dreamcatcher, Odd Eye). The hi-hats present throughoutTrigger” with not only aggression like they should but also an actual feeling of “emptiness” in between each of them. The immediacy of electret’s transient response really comes out to shine in situations like “Trigger.” Itzy’s “Not Shy” benefits in a slightly different way in the chorus. Once again, less defined sets loose much of the intricate hi-hat detail present following the whistling tone at 0:48. The EJ09’s keep the treble detail [primarily on the right] exceptionally crisp while still keeping the vocals forward. Moving to Dreamcatcher’s “Odd Eye,” the high-energy snaps starting at 0:20 come off sharp and with a quick leading and trailing edge.

While the EJ09’s delivery an exceptionally detailed and nuanced treble register, the raw amount of treble may sometimes bring about issues on tracks with large amounts of sharp transients near the whistle register. (See Coheed & Cambria, Colors, 1:40). While not completely unlistenable like pre-burn in, the stick hits at 1:40 on the left still have a such a sharpness and liveliness that detracts from the rest of the chorus. This does not present itself with warmer and darker sets like the EJ07. We have a somewhat similar problem with Kesha’s “Tik Tok” [that’s a name that hasn’t been brought up in a while]. Each chorus features a repetitive hi-hat that is brought forward that draws attention and detracts from immersion. At very high listening volumes, the hats in this song in particular devolves into piercing and overwhelming, practically eviscerating the tonal balance and making you worry about your eardrums instead of enjoy the experience.

The Upper Mid’s
Having struggling to think about the “mid’s’ as an entire block, I feel inclined to break up them up into upper and lower mid’s. The driver configuration of the 09’s would seem to mirror this idea, with a Dual Knowles BA handling what I would consider to be upper mid and low-treble. In this range, I find primarily higher octave instruments and female soprano vocals.

One of the primary stand-outs of the entire EJ09’s signature is the fluidity and importance it gives to female vocalists across genres. (See Ailee, When We Were In Love). Ailee’s powerful vocals at the second half of the song place themselves well above the accompaniment and her head-voice takes on a shimmering quality. Her vocal vibrato [throughout, really] at 2:44 and 2:50 are much more accentuated on the EJ09’s than its sister set. Breathy vocals take on an ethereal trail to them while still remaining forward and assertive. (See Nature, Girls). The first pre-chorus at 0:54 has a reverb that comes off as longer and more lively than on the EJ07’s.

Deviating a little from the Tidal track-list, AleXa and Sonnet Son’s cover of “Sway with Me” presents an interesting study between the upper mid’s and lower mid’s [below]. Starting at 2:30, Sonnet Son’s sustained high note is contrasted starkly with AleXa’s chorus and the EJ09’s take that further. Sonnet Son comes through with force, power, and vigor, just teetering on the edge of overpowering. While strong, the EJ09’s remain controlled in their abilities and don’t deviate or distort the original recording as far as I can hear.

The Lower Mid’s
In contrast to the forward and strong upper mid’s, the lower mid’s seem to present a vastly different experience. Lacking a sharply defined bass shelf, the lower mid’s come out more veiled and muddy but remains very cohesive with the lower range handled by the dynamic driver.

This becomes especially present in male-vocal rock tracks, with some of the vocals blurring into the bass guitar and drums. (See Anberlin, Losing It All). Starting at 2:30, the vocals become extremely smeared with the instrumentals and become difficult to distinguish during the breakdown. It’s not to say that the vocals aren’t present. The lack of a bass shelf simply draws attention away from them. “Centuries” by Fall Out Boy also falls victim to this in certain sections, becoming especially apparent post-chorus. Some tracks are much more immune these effects though. (See Breaking Benjamin, Anthem of the Angels). The blurred lower mid’s still definitely are noticeable, but the less surrounding bass energy allow the vocals to still maintain some presence.

However, the lack of a true bass “shelf” makes the entire range sound very cohesive—almost as if the entire range was handled by just the DD. It’s extremely difficult to point to tracks that epitomize this unfortunately though as it’s all-around experience rather than an artifact of how the EJ09’s play certain tracks. Overall, the EJ09 feels more like a well-tuned single-DD set in the low-range as opposed to a hybrid design with a DD handling just the sub bass region.

The Bass
The bass on the EJ09’s is best described as a relaxed but textual experience. What the EJ09’s lack in raw bass quantity, it makes up for in bass texture and clarity, even at the extremely low ranges. Depending on the nature of the track and genre though, you may find the textural elements useless and the quantity unsatisfying. (See Excision & Illenium ft. Shallows, Gold (Stupid Love)).

The most polarized I’ve been with the EJ09’s is using them with Dubstep and similar EDM sub-genres. Being rather used to the “clubbing” scene (with earplugs, of course) these genres almost require a huge amount of sub-bass to sound fun. (See Alan Walker, Diamond Heart). Having heard this track through TAO’s PA system by Alan Walker himself not too long ago, the lack of raw sub-bass energy during the chorus left me wanting. Though, at the same time, the reduction in pure rumble left much more of the range option to a sense of resolution and detail. The empty space around each of the bass synths is much more readily apparent, when your skull isn’t being rattled.

The EJ09’s also respond wonderfully to quick and sharp sub-bass notes. (See The Tech Thieves, Bang!). While raw energy is, again, lacking in the bass drop, the sheer speed at which the bass notes hit and decay make the track incredibly enjoyable. All that said, I would not classify the EJ09’s as “lean” in the Etymotic sense of the word. (See Skan, Run). The bass at 1:30 is plenty for my tastes and if more is really desired, a few dB of EQ never killed anyone.

Comparisons to the EJ07 and Technicalities
See my track-by-track breakdown against the Shuoer EJ07’s on the Impressions Thread.





The Verdict
The big question for this set is whether it’s worth the $400 price tag increase from the si ilar Shuoer EJ07’s. For those extra $400, you get 2 additional BA’s adding to the upper range clarity. You get more treble and whistle extension focus, sacrificing a bit of articulation in the lows. These are exceptionally tonally pleasing IEM’s for people who are into treble and female vocals. The set is exceptionally technically capable and I really can’t find anything that would be a dealbreaker in these unless you’re treble-sensitive. It’s still $400 more though, but the EJ09’s remain in a price bracket that doesn’t have much that would outshine it. I would definitely get the EJ09's if I were looking in the $1200–1500 bracket as it's hard to find something comparable.
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Is the nozzle length at least longer than the short nozzle on the EJ07M?
@Paramekshu Yes, the UIEM nozzle is more like the original resin 07 nozzle.
I couldn't find reviews for them anywhere, and here is a custom version, and it's not clear how it sounds at all. The sound signature has changed anyway.