Thieaudio Prestige VS 64 Audio U4S

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

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Thieaudio Prestige and 64 Audio U4S use 1DD+4BA+4EST and 1DD+3BA driver setups respectively. Thieaudio Prestige costs $1,200 while 64 Audio U4S costs $1,100. Thieaudio Prestige is $100 more expensive. 64 Audio U4S holds a clear 0.9-point edge in reviewer scores (7.2 vs 8.1). 64 Audio U4S has significantly better bass with a 1-point edge, 64 Audio U4S has significantly better mids with a 1.3-point edge, 64 Audio U4S has significantly better dynamics with a 1.7-point edge, 64 Audio U4S has slightly better details with a 0.3-point edge and 64 Audio U4S has significantly better imaging with a 1.5-point edge.

Insights

Metric Thieaudio Prestige 64 Audio U4S
Bass 7 8
Mids 6.5 7.8
Treble 7 6.8
Details 7 7.3
Soundstage 7.2 6
Imaging 6 7.5
Dynamics 6 7.7
Tonality 7.2 7.4
Technicalities 7.7 7

Thieaudio Prestige Aggregated Review Score

Average Reviewer Scores

Tim Tuned Gizaudio Axel Precogvision
Yifang
Jays Audio

Average Reviewer Score:

7.2

Generally Favorable

64 Audio U4S Aggregated Review Score

Average Reviewer Scores

Smirk Audio Jaytiss Precogvision
Audionotions Head-Fi.org
Super* Review

Average Reviewer Score:

8.1

Very Positive

Reviews Comparison

Thieaudio Prestige reviewed by Precogvision

Precogvision 6.1 Reviewer Score
B Tuning
B Tech
Very bright in the upper-treble which leads to a fatiguing sound and masking issues.

Precogvision original ranking

Precogvision Youtube Channel
Bass: B Mids: B Treble: B Dynamics: B Details: A- Imaging: B

64 Audio U4S reviewed by Precogvision

Precogvision 7.7 Reviewer Score
A Tuning
A- Tech
YouTube video thumbnail
Fantastic colored tonality with options, and the unique technical qualities to back it up. M12/M15 modules recommended.
Youtube Video Summary

The 64 Audio U4s hits a compelling sweet spot: a 1DD+3BA hybrid around $1,100 that echoes the lush, bass-tilted character of the Nio while fixing key drawbacks. Packaging and accessories feel improved, with multiple tip options and the included M12 APEX module; APEX not only tailors bass but also relieves pressure for long sessions. Fit follows 64 Audio’s comfortable triangular shell; the vented DD asks for a slightly shallower insert than the all-BA models. Sonically, expect a sub-bass-oriented shelf and a treble profile that’s more lively and “zingy” than the Nio, with extra energy around the upper treble. The big caveat is 64 Audio’s muted 2–4 kHz region, which can set soprano vocals a step back on the stage.

Against the brand’s full-BA staples (think U12t/U6t), the U4s trades some pinpoint imaging and coherency for unmistakable DD slam and tactile “air pushing.” Extension at both ends is excellent, with upper-treble energy that makes micro-detail and reverb trails pop. It’s not the clean, conventional neutrality of something like a Monarch-style tuning; rather, it’s a deliberate, colored signature that delivers fun plus technical chops. Crucially, it fills a missing niche at its price and, in many respects, outperforms the pricier Nio, making the U4s a standout recommendation for listeners who want bass authority, sparkle, and engaging dynamics without going all-in on the flagship tier.

Bass: A+ Mids: A+ Treble: A- Dynamics: A+ Details: A- Imaging: A-

Precogvision original ranking

Precogvision Youtube Channel

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Thieaudio Prestige (more reviews)

Thieaudio Prestige reviewed by Jays Audio

Jays Audio 9 Reviewer Score
S Tuning
S Tech
Sub-bass boost + treble boost. Similar to Crimson, lots of treble energy, great tech, more aggresive LTD.

Jays Audio original ranking

Jays Audio Youtube Channel

Thieaudio Prestige reviewed by Yifang

Yifang 8 Reviewer Score
A+ Tuning
A+ Tech
check links for more info:

Yifang original ranking

Yifang Youtube Channel

Thieaudio Prestige reviewed by Tim Tuned

Tim Tuned 6.5 Reviewer Score
B+ Tuning
A+ Tech
High micro details, clean bass Treble damage timbre

Tim Tuned original ranking

Tim Tuned Youtube Channel
Bass: A+ Mids: A- Treble: A+

Thieaudio Prestige reviewed by Gizaudio Axel

Gizaudio Axel 6.5 Reviewer Score
B+ Tuning
A- Tech
Lots of bass, good slam, controlled mid-range. Bass quality, too much upper treble, timbre, and overall detail.

Gizaudio Axel original ranking

Gizaudio Axel Youtube Channel

64 Audio U4S (more reviews)

64 Audio U4S reviewed by Super* Review

Super* Review 9* * score rescaled + normalized
YouTube video thumbnail
Youtube Video Summary

The 64 Audio U4s hits a compelling sweet spot: a 1DD+3BA hybrid around $1,100 that echoes the lush, bass-tilted character of the Nio while fixing key drawbacks. Packaging and accessories feel improved, with multiple tip options and the included M12 APEX module; APEX not only tailors bass but also relieves pressure for long sessions. Fit follows 64 Audio’s comfortable triangular shell; the vented DD asks for a slightly shallower insert than the all-BA models. Sonically, expect a sub-bass-oriented shelf and a treble profile that’s more lively and “zingy” than the Nio, with extra energy around the upper treble. The big caveat is 64 Audio’s muted 2–4 kHz region, which can set soprano vocals a step back on the stage.

Against the brand’s full-BA staples (think U12t/U6t), the U4s trades some pinpoint imaging and coherency for unmistakable DD slam and tactile “air pushing.” Extension at both ends is excellent, with upper-treble energy that makes micro-detail and reverb trails pop. It’s not the clean, conventional neutrality of something like a Monarch-style tuning; rather, it’s a deliberate, colored signature that delivers fun plus technical chops. Crucially, it fills a missing niche at its price and, in many respects, outperforms the pricier Nio, making the U4s a standout recommendation for listeners who want bass authority, sparkle, and engaging dynamics without going all-in on the flagship tier.

Super* Review original ranking

Super* Review Youtube Channel

64 Audio U4S 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.

Audionotions original ranking

Website (Audionotions)

64 Audio U4S 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+

64 Audio U4S 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

64 Audio U4S reviewed by Head-Fi.org

Head-Fi.org 8 * score rescaled + normalized
4 community members have rated the 64 Audio U4s at an average of 4.3/5 on Head-Fi. Overall sentiment: Excellent.

URL to full Review

Head-Fi.org original ranking

Thieaudio Prestige User Review Score

Average User Scores

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64 Audio U4S User Review Score

Average User Scores

Average User Score: n/a

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Thieaudio Prestige Gaming Score

Gaming Score & Grade

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

Gaming Score

6.5

Gaming Grade

B+

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

Thieaudio Prestige Scorings

Average Technical & Tuning Grades

Average Tunign Grade

A-
  • It balances warmth and clarity well, showing only minor quirks along the way. Timbre feels believable with most instruments.

Average Technical Grade

A
  • Overall technical control is strong, presenting instruments with clarity and sensible staging. Textures are portrayed with satisfying clarity.
Bass A-
It serves up confident rumble and texture while keeping the spectrum balanced. You can enjoy bass-heavy music without fatigue.
Mids B+
Expect a confident midrange that keeps details audible without harshness. Acoustic arrangements sound engaging.
Treble A-
Highs feel superbly executed, revealing micro-detail without hint of sibilance. Highs stay smooth even at volume.
Dynamics B
Expect energetic dynamics that bring music to life without harshness. It injects enthusiasm into fast music.
Details A-
Textural subtleties glow, giving each recording a beautifully illuminated character. It exposes mix decisions with precision.
Imaging B
Layered vocals and harmonies remain distinct and easy to track. Layered vocals remain easy to track.
Gaming B+
Respectable environmental presentation favors atmosphere over precision. Detects obvious directional cues while conveying game world ambiance. Bad value-to-cost for gaming purpose - not recommended

64 Audio U4S Scorings

Average Technical & Tuning Grades

Average Tunign Grade

A-
  • A smooth, agreeable balance keeps the presentation engaging without obvious flaws. Only sensitive ears will nitpick the bumps.

Average Technical Grade

A-
  • Technical chops are reliable, pairing tidy separation with a soundstage that stays conservative. Micro-detail is decent, though never spotlighted.
Bass A+
Expect a gripping low-end presence that marries clarity with visceral impact. Dynamic swings land with thrilling force.
Mids A
Midrange performance is excellent, with natural timbre and great detail. Vocals feel lifelike and full-bodied.
Treble B+
Expect crisp, well-balanced treble that keeps shimmer intact. You hear reverbs decay naturally.
Dynamics A
You get outstanding dynamic agility, from subtle nuances to big hits. Impact comes with quick recovery.
Soundstage B
Good soundstage with proper width and depth, placing instruments in clearly defined positions. Instruments sit in their own lanes.
Details A-
Resolution feels both high and relaxed, capturing nuance with ease. There's zero smearing even at high volume.
Imaging A
Depth mapping feels natural and accurate, supporting convincing immersion. Depth mapping feels precise and natural.
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

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