64 Audio U4s and Fir Audio E10 are in-ear monitors. 64 Audio U4s costs $1,100 while Fir Audio E10 costs $1,299. Fir Audio E10 is $199 more expensive. 64 Audio U4s holds a decisive 4.2-point edge in reviewer scores (8.2 vs 4). 64 Audio U4s has significantly better mids with a 2.8-point edge, 64 Audio U4s has significantly better treble with a 5.8-point edge, 64 Audio U4s has significantly better dynamics with a 3.7-point edge and 64 Audio U4s has significantly better soundstage with a 1-point edge.
Insights
Metric | 64 Audio U4s | Fir Audio E10 |
---|---|---|
Bass | 8 | 4 |
Mids | 7.8 | 5 |
Treble | 6.8 | 1 |
Details | 7.3 | 4 |
Soundstage | 6 | 5 |
Imaging | 7.5 | 4 |
Dynamics | 7.7 | 4 |
Tonality | 7.4 | 4 |
Technicalities | 7 | 1 |
64 Audio U4s Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
8.2Very Positive
Fir Audio E10 Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
4Unfavorable
Reviews Comparison
64 Audio U4s reviewed by Jaytiss
Jaytiss Youtube Channel
Fir Audio E10 reviewed by Jaytiss
64 Audio U4s (more reviews)
64 Audio U4s reviewed by Super* Review
64 Audio U4s reviewed by Audionotions
64 Audio U4s reviewed by Smirk Audio
64 Audio U4s reviewed by Precogvision
Precogvision Youtube Channel
64 Audio U4s Details
Driver Configuration: 1DD+3BA
Tuning Type: neutral, bass-boosted neutral
Brand: 64 Audio Top 64 Audio IEMs
Price (Msrp): $1,100
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Fir Audio E10 Details
Driver Configuration: n/a
Tuning Type: n/a
Price (Msrp): $1,299
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64 Audio U4s User Review Score
Average User Scores
Average User Score: n/a
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Fir Audio E10 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
6.1Gaming Grade
BFir Audio E10 Gaming Score

Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
0.9Gaming Grade
F+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.
Fir Audio E10 Scorings
Average Technical & Tuning Grades
Average Tunign Grade
C-- Significantly flawed tuning. Noticeable frequency imbalances and unnatural timbre distract from music. Lacks versatility across recordings.
Average Technical Grade
E-- Noticeably blurred or congested. Struggles with basic instrument separation; details are lost in simple tracks. Feels "flat" and one-dimensional.
64 Audio U4s User Reviews
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