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 |
LetShuoer EJ07 Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
7.7Strongly Favorable
Campfire Audio Alien Brain Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
8.3Very Positive
Reviews Comparison
LetShuoer EJ07 reviewed by Head-Fi.org
Campfire Audio Alien Brain reviewed by Head-Fi.org
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LetShuoer EJ07 (more reviews)
LetShuoer EJ07 reviewed by Jays Audio
Jays Audio Youtube Channel
LetShuoer EJ07 reviewed by Audionotions
LetShuoer EJ07 reviewed by Shuwa-T
Campfire Audio Alien Brain (more reviews)
Campfire Audio Alien Brain reviewed by Jaytiss
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.
Jaytiss Youtube Channel
Campfire Audio Alien Brain reviewed by Smirk Audio
LetShuoer EJ07 Details
Driver Configuration:
Tuning Type: n/a
Brand: Letshuoer Top Letshuoer IEMs
Price (Msrp): $900
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Campfire Audio Alien Brain Details
Driver Configuration: 1DD+4BA
Tuning Type: Neutral with Bass Boost
Brand: Campfire Top Campfire IEMs
Price (Msrp): $1,000
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LetShuoer EJ07 User Review Score
Average User Scores
Average User Score: n/a
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Campfire Audio Alien Brain User Review Score
Average User Scores
Average User Score: n/a
Based on 0 user reviews
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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
7Gaming 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
6.7Gaming 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.
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.
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