Cozoy D2 vs KZ ZS10 Pro: which should you buy?

On aggregated review scores the Cozoy D2 comes out ahead with a HearWiki score of 81. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: Cozoy D2 - Outstanding overall at around $55.

Wired IEMs

Cozoy D2

81Outstanding

$55

Full review data

Wired IEMs

Score breakdown

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

Cozoy D2 leads on 3 of 4 measures.

Cozoy D2
KZ ZS10 Pro

HearWiki score

Sound

8.5

7.4

Value

9.0

7.0

Price (USD)

$55

$47

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 Cozoy D2 is 7 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. For 7 years between them, that is a thin return - treat this as a restyle rather than a new platform.

D220267 yr newer
ZS10 Pro2019

Specifications

D2ZS10 Pro

Type: Wired IEMs; Wired IEMs
Price (USD): $55; $47
HearWiki score: 81; 71
Released: 2026; 2019
Availability: Sold new; Still sold new
Driver: 2DD; 1DD + 4BA hybrid
Driver type: dynamic; hybrid
Driver configuration: 2DD; 1DD + 4BA
Driver size: -; 10 mm
Drivers per side: 2; 5
Frequency response: -; 7 Hz - 40 kHz
Impedance: 20 Ω; 30 Ω
Sensitivity: -; 111 dB/mW
Sensitivity (dB/Vrms): -; 134
Active noise cancelling: -; No
ANC type: -; none
Transparency mode: -; No
Companion app: -; No
Custom EQ: -; No
Wear detection: -; No
Controls: -; buttons
Detachable cable: -; Yes
USB-C: -; No
Connector: 2-pin 0.78 mm; 3.5 mm

Specification comparison of Cozoy D2 vs KZ ZS10 Pro
Spec	Cozoy D2	KZ ZS10 Pro
Type	Wired IEMs	Wired IEMs
Price (USD)	$55	$47
HearWiki score	81 / 100 Outstanding	71 / 100 Good
Released	2026	2019
Audio
Driver	2DD	1DD + 4BA hybrid
Driver type	dynamic	hybrid
Driver configuration	2DD	1DD + 4BA
Driver size	-	10 mm
Drivers per side	2	5
Frequency response	-	7 Hz - 40 kHz
Impedance	20 Ω	30 Ω
Sensitivity	-	111 dB/mW
Sensitivity (dB/Vrms)	-	134
Features
Active noise cancelling	-	No
ANC type	-	none
Transparency mode	-	No
Companion app	-	No
Custom EQ	-	No
Wear detection	-	No
Controls	-	buttons
Design
Detachable cable	-	Yes
USB-C	-	No
Connector	2-pin 0.78 mm	3.5 mm

What reviewers said

Cozoy D2

The Cozoy D2 is a budget-friendly wired IEM that pairs a 6 mm beryllium driver with a 10 mm graphene-composite driver for a dual-dynamic setup. It offers a flexible connection via a 2-pin 0.78 mm cable that includes swappable 3.5 mm and 4.4 mm plugs, catering to both standard and balanced sources. With a 20-ohm impedance, it's easy to drive from most devices.

Pro:Dual-driver hybrid design for detailed sound
Pro:Interchangeable 3.5 mm and 4.4 mm plugs
Pro:Low impedance (20 ohms) for easy pairing

Con:No active noise cancellation
Con:Wired only, limiting portability
Con:Budget build may not suit all users

KZ ZS10 Pro

The KZ ZS10 Pro is a budget-friendly hybrid in-ear monitor that packs a single dynamic driver and four balanced armatures into a compact shell. It delivers a lively, versatile sound with solid passive isolation and easy-to-drive performance, making it a strong value pick for its price. While the included cable is a weak point, the overall tuning and comfort make it a compelling choice for budget-conscious listeners.

Pro:Excellent value for the price
Pro:Good passive noise isolation
Pro:Easy to drive from most sources

Con:Stock cable feels cheap and could be better
Con:Budget-IEM tradeoffs in build and accessories
Con:Not for those seeking a neutral reference sound

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

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