64 Audio U4S vs Aful Dawn-X: which should you buy?

On aggregated review scores the Aful Dawn-X comes out ahead with a HearWiki score of 81. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: Aful Dawn-X - Great overall at around $1300.

Wired IEMs

Score breakdown

Each axis is a 0–10 blend of what reviewers scored, not a lab measurement.

Aful Dawn-X leads on 2 of 4 measures.

64 Audio U4S
Aful Dawn-X

HearWiki score

Sound

8.5

8.8

Value

7.5

Price (USD)

$1,100

$1,300

Generation & platform

The scores rank quality. This is the other question: is the newer one actually newer technology, or the same platform in a new shell?

Same generation

The Aful Dawn-X is 2 years newer, but it is the same generation of hardware: nothing in the radio, the codecs or the noise cancelling separates them. Nothing separates them on convenience features either, so the choice comes down to tuning and price.

U4S2023
Dawn-X20252 yr newer

Specifications

U4SDawn-X

Type: Wired IEMs; Wired IEMs
Price (USD): $1,100; $1,300
HearWiki score: 76; 81
Released: 2023; 2025
Availability: Discontinued; Sold new
Driver: 1DD + 3BA hybrid; 1DD + 8BA + 4EST tribrid
Driver type: hybrid; tribrid
Driver configuration: 1DD + 3BA; 1DD + 8BA + 4EST
Drivers per side: 4; 13
Impedance: 11 Ω; 15 Ω
Sensitivity: 107 dB/mW; -
Active noise cancelling: No; No
Connector: -; 2-pin 0.78 mm

Specification comparison of 64 Audio U4S vs Aful Dawn-X
Spec	64 Audio U4S	Aful Dawn-X
Type	Wired IEMs	Wired IEMs
Price (USD)	$1,100	$1,300
HearWiki score	76 / 100 Great	81 / 100 Great
Released	2023	2025
Audio
Driver	1DD + 3BA hybrid	1DD + 8BA + 4EST tribrid
Driver type	hybrid	tribrid
Driver configuration	1DD + 3BA	1DD + 8BA + 4EST
Drivers per side	4	13
Impedance	11 Ω	15 Ω
Sensitivity	107 dB/mW	-
Features
Active noise cancelling	No	No
Design
Connector	-	2-pin 0.78 mm

What reviewers said

64 Audio U4S

The 64 Audio U4S is a hybrid universal IEM that blends a dynamic driver with three balanced armatures to deliver a well-rounded, musical sound signature. It offers punchy, well-defined bass, smooth mids, and crisp treble, making it a versatile and easy-to-drive choice for a wide range of genres. While its tuning leans toward enjoyment rather than pure neutrality, it maintains solid technical performance with good detail retrieval and soundstage for its price point.

Pro:Energetic and well-extended bass response
Pro:Smooth, natural midrange with good vocal presence
Pro:Easy to drive thanks to high sensitivity and low impedance

Con:Lower mids can sound slightly recessed to some ears
Con:Lacks active noise cancellation for noisy environments
Con:Price point may be high for those seeking a strictly neutral sound

Aful Dawn-X

The Aful Dawn-X is a flagship wired IEM with a warm-neutral signature that combines deep, controlled bass with smooth, natural mids and treble. It offers impressive detail retrieval and a spacious soundstage, though its large shells and slightly plasticky build may not suit everyone. Overall, it delivers strong performance that rivals more expensive models in its class.

Pro:Layered, well-controlled bass
Pro:Natural and smooth midrange
Pro:Excellent soundstage and imaging

Con:Large shells may fit poorly for some
Con:Build quality feels less premium than expected
Con:No noise cancellation or wireless options

Summaries are AI-condensed and paraphrased from published reviews and specs - not original hands-on testing. More on our method.

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New comparison 64 Audio U4S Aful Dawn-X