64 Audio U4s VS Campfire Audio Alien Brain

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

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64 Audio U4s and Campfire Audio Alien Brain use 1DD+3BA and 1DD+4BA driver setups respectively. 64 Audio U4s costs $1,100 while Campfire Audio Alien Brain costs $1,000. 64 Audio U4s is $100 more expensive. Both score 8.2 from reviewers. 64 Audio U4s has slightly better mids with a 0.3-point edge, Campfire Audio Alien Brain has better treble with a 0.9-point edge, Campfire Audio Alien Brain has slightly better dynamics with a 0.3-point edge, Campfire Audio Alien Brain has significantly better soundstage with a 2-point edge, 64 Audio U4s has slightly better details with a 0.3-point edge and 64 Audio U4s has better imaging with a 0.5-point edge.

Insights

Metric 64 Audio U4s Campfire Audio Alien Brain
Bass 8 8
Mids 7.8 7.5
Treble 6.8 7.8
Details 7.3 7
Soundstage 6 8
Imaging 7.5 7
Dynamics 7.7 8
Tonality 7.4 7.8
Technicalities 7 7.7

64 Audio U4s Aggregated Review Score

Average Reviewer Scores

Smirk Audio Jaytiss Precogvision
Audionotions
Super* Review

Average Reviewer Score:

8.2

Very Positive


Campfire Audio Alien Brain Aggregated Review Score

Average Reviewer Scores

Smirk Audio
Jaytiss

Average Reviewer Score:

8.2

Very Positive


64 Audio U4s 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

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64 Audio U4s Gaming Score

Gaming Score & Grade

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

Gaming Score

6.1

Gaming Grade

B

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+

64 Audio U4s Scorings

Average Technical & Tuning Grades

Average Tunign Grade

A-
  • Pleasing tonal balance with good technical control. Minor quirks present but not distracting. Demonstrates decent genre versatility.

Average Technical Grade

A-
  • Competent technical presentation. Handles separation and detail well in most tracks, with modest soundstage and acceptable imaging capabilities.
Bass A+
Excellent bass response - powerful yet controlled. Deep extension with authoritative slam while maintaining clarity.
Mids A
Excellent midrange with natural timbre and great detail retrieval. Vocals are forward and emotive with lifelike instrument reproduction.
Treble B+
Good treble response - clear and detailed without fatigue. Well-extended with proper air and sparkle.
Dynamics A
Excellent dynamics with great contrast and speed. Transients are crisp and micro-details are clearly articulated.
Soundstage B
Good soundstage with proper width and depth. Instruments have clear positioning with reasonable front/back placement.
Details A-
Excellent detail retrieval: highly resolving without being clinical. Effortlessly reveals micro-details and textural subtleties.
Imaging A
Excellent imaging: precise and stable placement. Instruments occupy specific points in space with tangible positions.
Gaming B
Decent spatial awareness for fundamental positioning. Creates satisfying atmosphere in story-driven games while handling basic directional cues. Bad value-to-cost for gaming purpose - not recommended

Campfire Audio Alien Brain Scorings

Average Technical & Tuning Grades

Average Tunign Grade

A
  • Well-executed tonal character. No major flaws with good technical control. Smooth presentation works with multiple genres.

Average Technical Grade

A
  • Good technical performance. Clear separation and decent detail retrieval across various tracks. Soundstage shows reasonable width and depth.
Bass A+
Excellent bass response - powerful yet controlled. Deep extension with authoritative slam while maintaining clarity.
Mids A
Excellent midrange with natural timbre and great detail retrieval. Vocals are forward and emotive with lifelike instrument reproduction.
Treble A
Excellent treble: airy, extended and well-controlled. Great micro-detail retrieval without sibilance or harshness.
Dynamics A+
Superb dynamic range - powerful yet nuanced. Exceptional transient response with lifelike impact and subtle volume gradations.
Soundstage A+
Exceptional soundstage with holographic imaging. Creates a truly three-dimensional space where instruments float naturally around you.
Details A-
Excellent detail retrieval: highly resolving without being clinical. Effortlessly reveals micro-details and textural subtleties.
Imaging A-
Excellent imaging: precise and stable placement. Instruments occupy specific points in space with tangible positions.
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

64 Audio U4s Reviews

Reviewed by: Super* Review

Super* Review 9* * score normalized
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Price: $1,122

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Reviewed by: Audionotions

Audionotions 8.5 Reviewer Score
A step down in techs from U12T (possibly a half step down from U6T). But very well tuned and adds in a dynamic driver punch. Timbre is slightly improved compared to U12T due to the increase in midbass and upper mids energy. On the second hand market, 64Audio IEMs are among the best values in portable audio, the U4S is no exception. Previously Owned

Audionotions original ranking

Website (Audionotions)

Reviewed by: Smirk Audio

Smirk Audio 7.8 Reviewer Score
A Tuning
A Tech
A tastefully colored U12t with a more intimate soundstage, a cutback in technicalities, and more bass realism.

Smirk Audio original ranking

Smirk Audio Head-Fi Profile

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

Reviewed by: Jaytiss

Jaytiss 7.8 Reviewer Score
B+ Tuning
B Tech
It's a solid set, with great build quality, but sonically isn't the specialist that I want it to be.

Jaytiss original ranking

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

Reviewed by: Precogvision

Precogvision 7.7 Reviewer Score
A Tuning
A- Tech
Fantastic colored tonality with options, and the unique technical qualities to back it up. M12/M15 modules recommended.

Precogvision original ranking

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

Campfire Audio Alien Brain Reviews

Reviewed by: Jaytiss

Jaytiss 8.8 Reviewer Score
A Tuning
A+ Tech
Nothing exceptional, but so basic and nice it's hard to not love.

Jaytiss original ranking

Jaytiss Youtube Channel
Mids: A- Treble: A+ Dynamics: A+ Soundstage: A+
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Price: $1,018

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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-

64 Audio U4s User Reviews

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Campfire Audio Alien Brain User Reviews

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