FitEar EST and 64 Audio U4S use 1BA+1EST and 1DD+3BA driver setups respectively. FitEar EST costs $1,300 while 64 Audio U4S costs $1,100. FitEar EST is $200 more expensive. 64 Audio U4S holds a decisive 4.2-point edge in reviewer scores (4 vs 8.2).
Insights
Metric | FitEar EST | 64 Audio U4S |
---|---|---|
Bass | 4 | 8 |
Mids | 4 | 7.8 |
Treble | 4 | 6.8 |
Details | 4 | 7.3 |
Soundstage | 4 | 6 |
Imaging | 4 | 7.5 |
Dynamics | 4 | 7.7 |
Tonality | 5 | 7.4 |
Technicalities | 4 | 7 |
FitEar EST Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
4Unfavorable
64 Audio U4S Aggregated Review Score
Average Reviewer Scores
Average Reviewer Score:
8.2Very Positive
Reviews Comparison
FitEar EST (more reviews)
FitEar EST reviewed by Crin
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 Jaytiss
Jaytiss Youtube Channel
64 Audio U4S reviewed by Precogvision
Precogvision Youtube Channel
FitEar EST Details
Driver Configuration: 1BA+1EST
Tuning Type: Warm
Price (Msrp): $1,300
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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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FitEar EST User Review Score
Average User Scores
Average User Score: n/a
Based on 0 user reviews
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64 Audio U4S User Review Score
Average User Scores
Average User Score: n/a
Based on 0 user reviews
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FitEar EST Gaming Score

Gaming Score & Grade
- The gaming score is prioritizing technical capabilities of the IEM (Separation, Layering, Soundstage) and good value.
Gaming Score
3.3Gaming Grade
D64 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
BFitEar EST Scorings
Average Technical & Tuning Grades
Average Tunign Grade
C+- Generally enjoyable tonal character with some noticeable unevenness. Maintains listenability while showing room for refinement in frequency balance.
Average Technical Grade
C-- Limited resolution; finer nuances are masked. Soundstage feels narrow, and complex passages cause muddiness. Transitions lack finesse.
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.
FitEar EST User Reviews
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