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Cozoy D2 vs Sennheiser IE 80 S: 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
  • Sennheiser IE 80 S
HearWiki score
81
50
Sound
8.5
6.6
Value
9.0
-
Price (USD)
$55
$71

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 9 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 9 years between them, that is a thin return - treat this as a restyle rather than a new platform.

  • D220269 yr newer
  • IE 80 S2017

Specifications

D2IE 80 S
Type
Wired IEMs
Wired IEMs
Price (USD)
$55
$71
HearWiki score
81
50
Released
2026
2017
Availability
Sold new
Discontinued
Driver
2DD
10 mm dynamic
Driver type
dynamic
dynamic
Driver configuration
2DD
-
Driver size
-
10 mm
Drivers per side
2
1
Frequency response
-
10 Hz - 20 kHz
Impedance
20 Ω
16 Ω
Sensitivity
-
116 dB/mW
Bluetooth
-
5.0
Codecs
-
SBC, AAC, aptX, aptX Low Latency, aptX HD, LHDC
Multipoint pairing
-
No
Battery life
-
6 h
Full charge time
-
90 min
Wireless charging
-
No
Active noise cancelling
-
No
Weight
-
18 g
Water resistance
-
none
USB-C
-
Yes
Connector
2-pin 0.78 mm
-
Microphones
-
2

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

Sennheiser IE 80 S

The Sennheiser IE 80 S is a wired in-ear monitor with a 10 mm dynamic driver, offering a detailed and weighty sound with adjustable bass via a tuning dial. It supports high-resolution audio codecs when used wirelessly via a Bluetooth cable, though it lacks active noise cancellation and multipoint connectivity. The earphones are comfortable and come with a detachable cable, but they do not include an inline remote or microphone.

  • Pro:Adjustable bass tuning
  • Pro:Detailed and weighty sound
  • Pro:Detachable cable and wide ear tip selection
  • Con:Lacks inline remote and microphone
  • Con:No active noise cancellation
  • Con:Sound may lack punch and timing for some listeners

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 comparisonCozoy D2Sennheiser IE 80 S