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COZOY D1 vs KZ Zenith: which should you buy?

On aggregated review scores the KZ Zenith comes out ahead with a HearWiki score of 80. The full breakdown - sub-scores, specs and what reviewers actually said - is below.

Our pick: KZ Zenith - Great overall at around $47.

Score breakdown

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

KZ Zenith leads on 2 of 4 measures.

  • COZOY D1
  • KZ Zenith
HearWiki score
78
80
Sound
7.5
8.5
Value
8.0
8.0
Price (USD)
$31
$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

COZOY D1 (2025) against KZ Zenith (2024). These are 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.

  • D120251 yr newer
  • Zenith2024

Specifications

D1Zenith
Type
Wired IEMs
Wired IEMs
Price (USD)
$31
$47
HearWiki score
78
80
Released
2025
2024
Availability
Sold new
Discontinued
Driver
10 mm driver
10 mm dynamic
Driver type
-
dynamic
Driver size
10 mm
10 mm
Drivers per side
-
1
Frequency response
-
20 Hz - 40 kHz
Impedance
-
41 Ω
Sensitivity
-
128 dB/mW
Active noise cancelling
-
No
Controls
-
none
Detachable cable
-
Yes
USB-C
-
No
Connector
-
3.5 mm

What reviewers said

COZOY D1

The COZOY D1 is a wired ultra-budget IEM that stands out for its mature, balanced tuning and robust build, delivering sound quality that exceeds its modest price point. While it excels in comfort and value, its stock eartips can hinder the experience due to poor fit and sealing issues.

  • Pro:Excellent value for the price
  • Pro:Comfortable and well-built shell
  • Pro:Mature, balanced sound signature
  • Con:Stock eartips are too small and often fail to seal
  • Con:No active noise cancellation
  • Con:May require aftermarket tips for optimal sound

KZ Zenith

The KZ Zenith is a wired, single-dynamic-driver IEM that delivers a balanced, non-fatiguing sound with punchy bass, detailed mids, and smooth treble. It's highly sensitive and easy to drive, making it a versatile choice for portable use, while its build quality and fit are praised. Despite a few minor caveats, it offers strong technical performance and competes well above its modest price point.

  • Pro:Balanced, non-offensive tuning with textured bass
  • Pro:Clear and detailed mids with refined treble
  • Pro:Very easy to drive and highly sensitive
  • Con:No active noise cancellation or controls
  • Con:Cable is detachable but not USB-C
  • Con:Minor caveats in overall technical refinement

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

Compare something else

Swap either side out, or start again from the picker.

New comparisonCOZOY D1KZ Zenith