64 Audio U4s VS 64 Audio U6t

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64 Audio U4s and 64 Audio U6t use 1DD+3BA and 6BA driver setups respectively. 64 Audio U4s costs $1,100 while 64 Audio U6t costs $1,300. 64 Audio U6t is $200 more expensive. 64 Audio U4s holds a slight 0.3-point edge in reviewer scores (8.2 vs 7.9). 64 Audio U4s has significantly better bass with a 1-point edge, 64 Audio U4s has slightly better mids with a 0.3-point edge, 64 Audio U4s has better treble with a 0.8-point edge, 64 Audio U4s has significantly better dynamics with a 1.2-point edge, 64 Audio U6t has significantly better soundstage with a 1-point edge, 64 Audio U4s has significantly better details with a 1.3-point edge and 64 Audio U4s has better imaging with a 0.5-point edge.

Metric	64 Audio U4s	64 Audio U6t
Bass	8	7
Mids	7.8	7.5
Treble	6.8	6
Details	7.3	6
Soundstage	6	7
Imaging	7.5	7
Dynamics	7.7	6.5
Tonality	7.4	6.8
Technicalities	7	5.9

64 Audio U4s Aggregated Review Score

Average Reviewer Score:

8.2

Very Positive

Show all 64 Audio U4s reviews

64 Audio U6t Aggregated Review Score

Average Reviewer Score:

7.9

Strongly Favorable

Show all 64 Audio U6t reviews

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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$1,122

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Driver Configuration: 6BA

Tuning Type: Bassy Neutral

Brand: 64 Audio Top 64 Audio IEMs

Price (Msrp): $1,300

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64 Audio U4s User Review Score

Average User Score: n/a

Based on 0 user reviews

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64 Audio U6t User Review Score

Average User Score: n/a

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64 Audio U4s Gaming Score

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

Gaming Score

6.1

Gaming Grade

64 Audio U6t Gaming Score

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

Gaming Score

5.1

Gaming Grade

C+

64 Audio U4s Scorings

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

64 Audio U6t Scorings

Average Tunign Grade

B+

Generally enjoyable tonal character with some noticeable unevenness. Maintains listenability while showing room for refinement in frequency balance.

Average Technical Grade

B-

Satisfactory technical performance. Handles basic detail retrieval adequately in most tracks. Maintains reasonable cohesion in simpler arrangements.

Bass A-

Strong, well-defined bass with good texture. Delivers satisfying punch and rumble without overwhelming other frequencies.

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 B+

Good dynamic expression with solid impact. Handles volume contrasts well while maintaining good transient snap.

Soundstage A-

Excellent spatial presentation - wide, deep and tall. Precise instrument placement with clear separation in all dimensions.

Details B

Good resolution with clear articulation of nuances. Reveals recording nuances and maintains clarity in complex passages.

Imaging A-

Excellent imaging: precise and stable placement. Instruments occupy specific points in space with tangible positions.

Gaming C+

Fundamental left/right positioning with limited depth perception. Works for non-competitive gaming but lacks precision. Bad value-to-cost for gaming purpose - not recommended

64 Audio U4s Reviews

Reviewed by: Super* Review

9* * score normalized

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Super* Review original ranking

Super* Review Youtube Channel

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Price: $1,122

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Reviewed by: 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

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

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

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-