LetShuoer EJ07M VS OpenAudio Mercury

IEM Comparison: Expert & Community Scores Side-by-Side

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LetShuoer EJ07M and OpenAudio Mercury use 1DD+2BA+4EST and 1DD+4BA driver setups respectively. LetShuoer EJ07M costs $670 while OpenAudio Mercury costs $600. LetShuoer EJ07M is $70 more expensive. LetShuoer EJ07M holds a decisive 2.2-point edge in reviewer scores (7.6 vs 5.4). LetShuoer EJ07M has significantly better bass with a 1.5-point edge, LetShuoer EJ07M has significantly better mids with a 1.5-point edge, LetShuoer EJ07M has significantly better dynamics with a 1-point edge, LetShuoer EJ07M has significantly better details with a 1.8-point edge and LetShuoer EJ07M has better imaging with a 0.8-point edge.

Insights

Metric LetShuoer EJ07M OpenAudio Mercury
Bass 7.5 6
Mids 7.5 6
Treble 6.2 6
Details 6.8 5
Soundstage 7.3 5.4
Imaging 6.8 6
Dynamics 6 5
Tonality 7.6 6.7
Technicalities 7.1 5.2
Take these comparisons with a grain of salt—we don't have enough OpenAudio Mercury reviews saved yet to provide an unbiased result.

LetShuoer EJ07M Aggregated Review Score

Average Reviewer Scores

Precogvision
Jays Audio Jaytiss Shuwa-T
Yifang Audionotions Super* Review Head-Fi.org

Average Reviewer Score:

7.6

Strongly Favorable

OpenAudio Mercury Aggregated Review Score

Average Reviewer Scores

Super* Review
Precogvision
Bad Guy Good Audio

Average Reviewer Score:

5.4

Mixed to Negative

Reviews Comparison

LetShuoer EJ07M reviewed by Super* Review

Super* Review 8* * score rescaled + normalized
YouTube video thumbnail
Youtube Video Summary

Letshuoer x HBB’s Kinda Lava retunes the EJ07M toward a neutral-with-tasteful-bass-boost signature, thickening the mid-bass versus the original’s Harman-leaning sub-bass shelf. The midrange sits essentially dead-on neutral with excellent clarity and micro-contrast, while the treble is well-extended yet notably safe for sibilance, occasionally showing a soft, sandy EST texture. Versus the stock EJ07M, this tuning feels more integrated and less “subwoofery,” though overall differences remain subtle.

The headline is the bass quality: firm attack, clean decay and addictive depth—easily among the top tier in the price class—without bleeding into the mids. Technicalities are solid, with decent imaging, but the head-stage runs a bit narrow and the overall tilt can sound slightly dark on airy recordings. Build is light metal with red shells and a handsome screw-top metal case; the stock cable feels basic for the price and the faceplate finish looks less premium than expected.

Fit is comfortable but may need SpinFit CP100 tips or a taller two-pin cable to lock in seal and stability. In comparisons, Sennheiser IE600 hits harder up top with a V-shaped incisiveness and wider sense of space, while Moondrop S8 offers brighter openness and BA-clean mids but less bass body. Kinda Lava threads the middle with balanced tonality, safe/detail-rich treble, and outstanding bass, culminating in a confident 5/5 verdict for listeners prioritizing natural mids and elite low-end over max soundstage.

Super* Review original ranking

Super* Review Youtube Channel

OpenAudio Mercury reviewed by Super* Review

Super* Review 4* * score rescaled + normalized
check links for more info:

Super* Review original ranking

Super* Review Youtube Channel
YouTube video thumbnail

LetShuoer EJ07M reviewed by Precogvision

Precogvision 6.4 Reviewer Score
A- Tuning
B Tech
Excellent tonality and dynamic bass held back only by a lack of intangible performance.

Precogvision original ranking

Precogvision Youtube Channel
Bass: A+ Mids: A+ Treble: B Dynamics: B Details: B Imaging: B

OpenAudio Mercury reviewed by Precogvision

Precogvision 5.2 Reviewer Score
C+ Tuning
C+ Tech
Basically a poor man's Legend X without some of the technicalities.

Precogvision original ranking

Precogvision Youtube Channel
Bass: C+ Mids: B Treble: C+ Dynamics: C+ Details: C+ Imaging: B

LetShuoer EJ07M (more reviews)

LetShuoer EJ07M reviewed by Yifang

Yifang 8 Reviewer Score
S- Tuning
A+ Tech
check links for more info:

Yifang original ranking

Yifang Youtube Channel

LetShuoer EJ07M reviewed by Audionotions

Audionotions 8 Reviewer Score
Nearly the same as the Kinda Lava with very slight differences in the bass. More subbass at the cost of a tiny bit of midbass. Same great mids and treble. Possibly a tad less thick note weight than KL, but to be honest it's hard to tell the difference between these and the KL. They are both great IEMs. I prefer KL because I find it just slightly more neutral and balanced.

Audionotions original ranking

Website (Audionotions)

LetShuoer EJ07M reviewed by Jays Audio

Jays Audio 7.5 Reviewer Score
S- Tuning
A+ Tech
Holographic staging with an amazing midrange. Great bass texture and impact. Incredibly immersive and endgame for most. Has more sub-bass and treble air than OG doesn't scale as well.

Jays Audio original ranking

Jays Audio Youtube Channel

LetShuoer EJ07M reviewed by Jaytiss

Jaytiss 7.5 Reviewer Score
B+ Tuning
B Tech
Fit is an issue same as the Blessing 2 Dusk.

Jaytiss original ranking

Jaytiss Youtube Channel
Mids: A- Treble: B Dynamics: B Soundstage: A-

LetShuoer EJ07M reviewed by Shuwa-T

Shuwa-T 7.3 Reviewer Score
A- Tuning
A Tech
Comment: EJ07 but more low end. The bassier EJ07

Shuwa-T original ranking

Shuwa-T Website

Bass: A- Mids: A Treble: B+ Soundstage: A Details: A Imaging: A

LetShuoer EJ07M reviewed by Head-Fi.org

Head-Fi.org 8.1 * score rescaled + normalized
10 community members have rated the LETSHUOER EJ07M at an average of 4.3/5 on Head-Fi. Overall sentiment: Excellent.

URL to full Review

Head-Fi.org original ranking

OpenAudio Mercury (more reviews)

OpenAudio Mercury reviewed by Bad Guy Good Audio

Bad Guy Good Audio 7.1 Reviewer Score
A+ Tuning
C+ Tech
check links for more info:

Bad Guy Good Audio original ranking

Bad Guy Good Audio Youtube Channel
Bass: A- Mids: B Treble: A-

LetShuoer EJ07M User Review Score

Average User Scores

Average User Score: n/a

Based on 0 user reviews

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OpenAudio Mercury User Review Score

Average User Scores

Average User Score: n/a

Based on 0 user reviews

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LetShuoer EJ07M Gaming Score

Gaming Score & Grade

  • The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.

Gaming Score

6.7

Gaming Grade

B+

OpenAudio Mercury Gaming Score

Gaming Score & Grade

  • The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.

Gaming Score

5.1

Gaming Grade

C+

LetShuoer EJ07M Scorings

Average Technical & Tuning Grades

Average Tunign Grade

A
  • It presents a smooth, well-integrated tonal balance that plays nicely with many styles. It maintains natural timbre across the range.

Average Technical Grade

A-
  • A competent technical showing keeps separation intact while delivering modest staging. It feels tidy even when recordings stack layers.
Bass A
The bass hits with conviction, offering both punch and clarity. It reaches low with confidence and control.
Mids A
Midrange performance is excellent, with natural timbre and great detail. Vocals feel lifelike and full-bodied.
Treble B
Treble response is good, delivering clarity and sparkle without fatigue. Hi-hats sound lively without sting.
Dynamics B
It handles shifts in volume well, keeping transients lively and controlled. Quiet-to-loud transitions feel natural.
Soundstage A-
All dimensions bloom together, producing an expansive venue that feels carefully rendered. You can map the ensemble easily.
Details B+
You hear inner textures easily, even when the arrangement piles on layers. You can hear subtle studio effects.
Imaging B+
Good imaging with precise instrument placement and clear front/back localization. Positions snap into place convincingly.
Gaming B+
Respectable environmental presentation favors atmosphere over precision. Detects obvious directional cues while conveying game world ambiance. Bad value-to-cost for gaming purpose - not recommended

OpenAudio Mercury Scorings

Average Technical & Tuning Grades

Average Tunign Grade

B+
  • Expect a friendly tonal balance that could use polish but remains inviting. Great for casual listening, less so for purists.

Average Technical Grade

C+
  • Overall technicalities are acceptable, delivering enough clarity for casual sessions. Imaging is serviceable though not immersive.
Bass B
Bass foundation is good, adding satisfying punch without losing control. Pop and rock tracks feel lively.
Mids B
Expect a confident midrange that keeps details audible without harshness. Acoustic arrangements sound engaging.
Treble B
Treble is articulate and clean, adding excitement without harshness. It adds sparkle without harshness.
Dynamics C+
Expect solid impact overall, even if finer gradations feel a touch smoothed. Micro-details could still be sharper.
Details C+
It rides the line between musicality and analysis, occasionally letting micro-detail slip by. Complex mixes stay organized for the most part.
Imaging B
Instrument boundaries feel well carved, avoiding smear or drift. Instrument outlines feel well-defined.
Gaming C+
Fundamental left/right positioning with limited depth perception. Works for non-competitive gaming but lacks precision. Bad value-to-cost for gaming purpose - not recommended

LetShuoer EJ07M User Reviews

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OpenAudio Mercury User Reviews

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