64 Audio U4s VS Symphonium Audio Helios SE

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

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64 Audio U4s and Symphonium Audio Helios SE are in-ear monitors. 64 Audio U4s costs $1,100 while Symphonium Audio Helios SE costs $1,200. Symphonium Audio Helios SE is $100 more expensive. Symphonium Audio Helios SE holds a slight 0.1-point edge in reviewer scores (8.2 vs 8.3).

Insights

Metric 64 Audio U4s Symphonium Audio Helios SE
Bass 8 8.3
Mids 7.8 8.3
Treble 6.8 8.3
Details 7.3 8.3
Soundstage 6 8.3
Imaging 7.5 8.3
Dynamics 7.7 8.3
Tonality 7.4 8.3
Technicalities 7 8.3

64 Audio U4s Aggregated Review Score

Average Reviewer Scores

Smirk Audio Jaytiss Precogvision
Audionotions
Super* Review

Average Reviewer Score:

8.2

Very Positive

Show all 64 Audio U4s reviews

Symphonium Audio Helios SE Aggregated Review Score

Average Reviewer Scores

Z-Reviews
Super* Review

Average Reviewer Score:

8.3

Very Positive

Show all Symphonium Audio Helios SE reviews

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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Symphonium Audio Helios SE Details

Driver Configuration: n/a

Tuning Type: Lean Neutral

Brand: Symphonium Top Symphonium IEMs

Price (Msrp): $1,200

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64 Audio U4s User Review Score

Average User Scores

Average User Score: n/a

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Symphonium Audio Helios SE User Review Score

Average User Scores

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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

Symphonium Audio Helios SE Gaming Score

Gaming Score & Grade

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

Gaming Score

7.3

Gaming Grade

A-

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

Symphonium Audio Helios SE Scorings

64 Audio U4s Reviews

Reviewed by: Super* Review

Super* Review 9* * score normalized
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Super* Review original ranking

Super* Review Youtube Channel
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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-
YouTube video thumbnail

Symphonium Audio Helios SE Reviews

Reviewed by: Super* Review

Super* Review 9* * score normalized
check links for more info:

Super* Review original ranking

Super* Review Youtube Channel
YouTube video thumbnail

Reviewed by: Z-Reviews

Z-Reviews 7.5 * score normalized
check links for more info:

Z-Reviews original ranking

Z-Reviews Youtube Channel
YouTube video thumbnail

64 Audio U4s User Reviews

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Symphonium Audio Helios SE User Reviews

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