LetShuoer EJ07 VS Campfire Audio Alien Brain

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

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LetShuoer EJ07 and Campfire Audio Alien Brain are in-ear monitors. LetShuoer EJ07 costs $900 while Campfire Audio Alien Brain costs $1,000. Campfire Audio Alien Brain is $100 more expensive. Campfire Audio Alien Brain holds a clear 0.5-point edge in reviewer scores (7.7 vs 8.3). Campfire Audio Alien Brain has significantly better bass with a 1-point edge, LetShuoer EJ07 has better mids with a 0.5-point edge, Campfire Audio Alien Brain has significantly better treble with a 1.3-point edge, Campfire Audio Alien Brain has better soundstage with a 0.5-point edge, LetShuoer EJ07 has significantly better details with a 1-point edge and LetShuoer EJ07 has better imaging with a 0.5-point edge.

Insights

Metric LetShuoer EJ07 Campfire Audio Alien Brain
Bass 7 8
Mids 8 7.5
Treble 6.5 7.8
Details 8 7
Soundstage 7.5 8
Imaging 7.5 7
Dynamics 7.7 8
Tonality 8.5 7.8
Technicalities 7.9 7.7
Take these comparisons with a grain of salt—we don't have enough LetShuoer EJ07 and Campfire Audio Alien Brain reviews saved yet to provide an unbiased result.

LetShuoer EJ07 Aggregated Review Score

Average Reviewer Scores

Average Reviewer Score:

7.7

Strongly Favorable


Campfire Audio Alien Brain Aggregated Review Score

Average Reviewer Scores

Average Reviewer Score:

8.3

Very Positive


Reviews Comparison

LetShuoer EJ07 reviewed by Head-Fi.org

Head-Fi.org 7 * score rescaled + normalized
4 community members have rated the Letshuoer EJ07 at an average of 3.8/5 on Head-Fi. Overall sentiment: Strongly Favorable.

URL to full Review

Head-Fi.org original ranking

Campfire Audio Alien Brain reviewed by Head-Fi.org

Head-Fi.org 8.5 * score rescaled + normalized
4 community members have rated the Campfire Audio Alien Brain at an average of 4.5/5 on Head-Fi. Overall sentiment: Outstanding.

URL to full Review

Head-Fi.org original ranking

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LetShuoer EJ07 (more reviews)

LetShuoer EJ07 reviewed by Jays Audio

Jays Audio 8.5 Reviewer Score
S+ Tuning
A+ Tech
TOTL mids. Most 3D and holographic staging yet. Imaging, separation, layering, and staging are all S level - only thing that's holding it back is the darker treble which can lead to softer notes vs, Diva, for example.The most immersive set for rock, alternative, ballads, and classical. An 07M that scales better with better staging. Great clarity and seperation. Treble is pushed back but still clear and evident in tracks (at higher volumes). Could use more low-end (but not an issue) and sharper note transients. Takes you on a journey. Needs to be listened to at high volume for the full effect.

Jays Audio original ranking

Jays Audio Youtube Channel

LetShuoer EJ07 reviewed by Audionotions

Audionotions 8 Reviewer Score
Very engaging and very natural sounding. Decent technicalities. Instruments sound correct. Staging and imaging very good for an IEM. Very enjoyable. Leans dark and maybe a bit lacking in treble extension but also very easy to just enjoy the music which, at the end of the day, is what we even want from IEMs right?

Audionotions original ranking

Website (Audionotions)

LetShuoer EJ07 reviewed by Shuwa-T

Shuwa-T 7.4 Reviewer Score
A- Tuning
A Tech
Comment: My favourite of the EJ lineup. Vocal centric with great clarity and thick note weights in the midrange Bass may be too polite

Shuwa-T original ranking

Shuwa-T Website

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

Campfire Audio Alien Brain (more reviews)

Campfire Audio Alien Brain reviewed by Jaytiss

Jaytiss 8.8 Reviewer Score
A Tuning
A+ Tech
So simple and nice it's hard to not love.
Youtube Video Summary

Alien Brain arrives as a single-DD + 4BA hybrid around $1,000 with a truly peculiar shell: the rounded, “alien cortex” faceplate is magnetic, uses MMCX, and can be tricky to seat. The unboxing is lavish—two cables (including 4.4 mm), a compact magnetic leather case, a USB-C DAC/amp, foams plus “sticky” tips, cleaning tools, and extras. Fit is the hurdle; tip-rolling is essential, but once positioned correctly, comfort and seal fall into place.

Tonally, this set pursues a balanced, all-rounder tuning with a near-ideal bass shelf, lively but controlled upper mids, and sparkly yet composed treble. There’s punch and detail without drifting into fatigue; extension is strong, but staging isn’t the most expansive and note weight isn’t “thumpy”—this isn’t a bass-head cannon, more a clean, grounded presentation. The FR shows a touch of 1 kHz energy and smooth ripples through presence/air that favor natural timbre over hyper-etched brilliance, making it a long-session, non-fatiguing listen.

Versus Campfire’s own lineup, it’s far more normalized than the colorful Trifecta, better extended than the warm Axion, and closer in poise to Moon Rover but with a bit more bass and refinement. Compared to peers like Dunu Glacier or DA Mecca, Alien Brain trades V-shaped excitement for cohesive neutrality, and avoids the upper-mid glare that can scare off listeners. Net result: a strong recommendation for those who can manage the fit and want a high-end Campfire that does something new—not the classic house warmth, not sterile flatness, but a realistic, well-rounded signature with broad appeal.

Mids: A- Treble: A+ Dynamics: A+ Soundstage: A+

Jaytiss original ranking

Jaytiss Youtube Channel

Campfire Audio Alien Brain reviewed by Smirk Audio

Smirk Audio 7.5 Reviewer Score
A Tuning
A- Tech
check links for more info:

Smirk Audio original ranking

Smirk Audio Head-Fi Profile

Bass: A+ Mids: A+ Treble: A Dynamics: A+ Details: A- Imaging: A-

LetShuoer EJ07 User Review Score

Average User Scores

Average User Score: n/a

Based on 0 user reviews

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Campfire Audio Alien Brain User Review Score

Average User Scores

Average User Score: n/a

Based on 0 user reviews

No user reviews yet. Be the first one who writes a review!

LetShuoer EJ07 Gaming Score

Gaming Score & Grade

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

Gaming Score

7

Gaming Grade

A-

Campfire Audio Alien Brain 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+

LetShuoer EJ07 Scorings

Average Technical & Tuning Grades

Average Tunign Grade

S-
  • It offers a luxurious, natural presentation with spot-on balance across the spectrum. Vocals and instruments weave together seamlessly.

Average Technical Grade

A
  • You get a well-rounded technical package that keeps separation, detail, and staging in harmony. It's a solid middle ground between fun and fidelity.
Bass A-
It serves up confident rumble and texture while keeping the spectrum balanced. You can enjoy bass-heavy music without fatigue.
Mids A+
Midrange quality is superb, rich with resolving power and transparency. Micro-details leap out effortlessly.
Treble B+
Expect crisp, well-balanced treble that keeps shimmer intact. You hear reverbs decay naturally.
Soundstage A
Excellent spatial presentation that is wide, deep, and tall with precise instrument placement. Width, depth, and height all feel expanded.
Details A+
Inner textures glow vividly yet never feel etched or artificial. It borders on studio-monitor transparency.
Imaging A
Each element locks into a steady coordinate even as the mix grows dense. Imaging holds even during busy segments.
Gaming A-
Good fundamental spatial awareness for most gaming scenarios. Handles basic positioning well but may lack nuance in complex situations. Bad value-to-cost for gaming purpose - not recommended

Campfire Audio Alien Brain Scorings

Average Technical & Tuning Grades

Average Tunign Grade

A
  • The response is even and composed, lending itself to effortless genre hopping. Voices sit comfortably in the mix.

Average Technical Grade

A
  • The balance of resolution and space feels assured, keeping complex passages coherent. Layering is convincing on most studio mixes.
Bass A+
It delivers flagship-worthy bass, rich in both rumble and nuance. Reference tracks showcase its grip.
Mids A
The mids sound lush and articulate, capturing emotion effortlessly. Strings and keys shimmer with realism.
Treble A
The treble is exquisitely tuned, combining crystal detail with relaxed delivery. Micro-details emerge effortlessly.
Dynamics A+
The presentation feels expansive, letting micro and macro dynamics breathe. There's a sense of limitless headroom.
Soundstage A+
Immersive holography surrounds the listener, making the venue feel tangible and enveloping. It delivers a grand, cinematic presentation.
Details A-
Micro-details glide to the forefront effortlessly while timbre remains natural. Ambient cues are vivid and lifelike.
Imaging A-
You can literally point to where sounds originate across the stage. You can point to where sounds originate.
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

LetShuoer EJ07 User Reviews

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Campfire Audio Alien Brain User Reviews

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