Sennheiser IE800S VS 64 Audio U4s

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

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Sennheiser IE800S and 64 Audio U4s use 1DD and 1DD+3BA driver setups respectively. Sennheiser IE800S costs $1,300 while 64 Audio U4s costs $1,100. Sennheiser IE800S is $200 more expensive. 64 Audio U4s holds a decisive 3.2-point edge in reviewer scores (5 vs 8.2). 64 Audio U4s has significantly better bass with a 3-point edge, 64 Audio U4s has significantly better mids with a 2.8-point edge, 64 Audio U4s has significantly better treble with a 1.8-point edge, 64 Audio U4s has significantly better dynamics with a 3.7-point edge, 64 Audio U4s has significantly better details with a 2.3-point edge and 64 Audio U4s has significantly better imaging with a 2.5-point edge.

Insights

Metric Sennheiser IE800S 64 Audio U4s
Bass 5 8
Mids 5 7.8
Treble 5 6.8
Details 5 7.3
Soundstage 5 6
Imaging 5 7.5
Dynamics 4 7.7
Tonality 5 7.4
Technicalities 5.6 7

Sennheiser IE800S Aggregated Review Score

Average Reviewer Scores

Precogvision
Crin

Average Reviewer Score:

5

Mixed to Negative


64 Audio U4s Aggregated Review Score

Average Reviewer Scores

Smirk Audio Jaytiss Precogvision
Audionotions
Super* Review

Average Reviewer Score:

8.2

Very Positive


Sennheiser IE800S 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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Sennheiser IE800S Gaming Score

Gaming Score & Grade

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

Gaming Score

4.4

Gaming Grade

C-

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

Sennheiser IE800S 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

B-
  • Satisfactory technical performance. Handles basic detail retrieval adequately in most tracks. Maintains reasonable cohesion in simpler arrangements.
Bass C+
Average bass performance - present but unremarkable. Has reasonable texture but lacks depth and physicality.
Mids C+
Decent midrange performance - balanced but unremarkable. Adequate clarity for most genres without notable flaws.
Treble C+
Decent treble with acceptable extension and detail. Can sound slightly unrefined but avoids being harsh or sibilant.
Dynamics C-
Average dynamics - passable but unexciting. Transients are rounded and micro-dynamics lack refinement.
Details C+
Decent detail retrieval. Handles most textures adequately though micro-details and ambient cues could be more pronounced.
Imaging C+
Decent positional accuracy. Good left/right placement with acceptable center image, though depth positioning is approximate.
Gaming C-
Minimal environmental definition provides only general audio cues. Suitable for games where positioning isn't critical. Bad value-to-cost for gaming purpose - not recommended

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

Sennheiser IE800S Reviews

Reviewed by: Crin

Crin 5.5 Reviewer Score
C+ Tuning
B+ Tech
Very subtle refinement to the original IE800.

Crin original ranking

Crin Youtube Channel

Reviewed by: Precogvision

Precogvision 4.5 Reviewer Score
C+ Tuning
C Tech
The usual Sennheiser in-ear tuning with a strange lack of dynamics.

Precogvision original ranking

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

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-

Sennheiser IE800S User Reviews

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64 Audio U4s User Reviews

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