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Cozoy D2 vs TRUTHEAR 1: 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.

Score breakdown

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

Cozoy D2 leads on 4 of 4 measures.

  • Cozoy D2
  • TRUTHEAR 1
HearWiki score
81
73
Sound
8.5
8.0
Value
9.0
8.5
Price (USD)
$55
$65

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
  • 12019

Specifications

D21
Type
Wired IEMs
Wired IEMs
Price (USD)
$55
$65
HearWiki score
81
73
Released
2026
2019
Availability
Sold new
Discontinued
Driver
2DD
1DD + 3BA hybrid
Driver type
dynamic
hybrid
Driver configuration
2DD
1DD + 3BA
Driver size
-
10 mm
Drivers per side
2
4
Frequency response
-
20 Hz - 40.5 kHz
Impedance
20 Ω
17.5 Ω
Sensitivity (dB/Vrms)
-
117.5
Active noise cancelling
-
No
Connector
2-pin 0.78 mm
2-pin 0.78 mm
Model code
-
ZERO:RED

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

TRUTHEAR 1

The TRUTHEAR 1 is a budget-friendly hybrid IEM that pairs a single dynamic driver with three balanced armatures for a detailed, four-driver setup. Its tuning leans toward a warm, bass-rich sound with smooth treble, making it a versatile pick for music and immersive gaming alike. While it offers strong value for the price, the fit may not suit everyone due to its larger nozzle and ear-hook design.

  • Pro:Excellent value for a hybrid driver setup
  • Pro:Warm, bass-forward sound with smooth treble
  • Pro:Good for action games and immersive audio
  • Con:Comfort issues for some due to large nozzle and ear hooks
  • Con:Warm tuning may be too thick for treble-sensitive listeners
  • Con:Not a standout for sports or competitive gaming scenarios

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 D2TRUTHEAR 1