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Cozoy D2 vs Hidizs MM2: 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
  • Hidizs MM2
HearWiki score
81
57
Sound
8.5
6.5
Value
9.0
6.1
Price (USD)
$55
$81

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 4 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 4 years between them, that is a thin return - treat this as a restyle rather than a new platform.

  • D220264 yr newer
  • MM22022

Specifications

D2MM2
Type
Wired IEMs
Wired IEMs
Price (USD)
$55
$81
HearWiki score
81
57
Released
2026
2022
Availability
Sold new
Discontinued
Driver
2DD
2-driver hybrid
Driver type
dynamic
hybrid
Driver configuration
2DD
-
Driver size
-
10.2 mm
Drivers per side
2
2
Frequency response
-
20 Hz - 40 kHz
Sound signature
-
v-shaped
Impedance
20 Ω
18 Ω
Sensitivity
-
104 dB/mW
Active noise cancelling
-
No
Controls
-
none
Weight
-
10 g
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

Hidizs MM2

The Hidizs MM2 is a budget-friendly hybrid in-ear monitor that pairs a 10.2mm dynamic driver with a balanced armature for a punchy, V-shaped sound. Its lightweight build and comfortable fit make it easy to wear, while the strong bass response and clear mids add to its appeal. However, its tuning may not suit everyone, and the lack of controls means you'll rely on your source device for adjustments.

  • Pro:Strong, impactful bass with good extension
  • Pro:Lightweight and comfortable for long listening sessions
  • Pro:Solid build quality for the price
  • Con:V-shaped tuning may not appeal to neutral listeners
  • Con:No inline controls or microphone
  • Con:Requires a decent source to shine due to low impedance

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

Compare something else

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New comparisonCozoy D2Hidizs MM2