Skip to content
HearWiki

Cozoy D2 vs Sennheiser IE 100 PRO: which should you buy?

Specs, scores and condensed review verdicts for the Cozoy D2 vs Sennheiser IE 100 PRO, side by side. Where a product has no HearWiki score yet, not enough reviews have been aggregated to rate it.

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 100 PRO
HearWiki score
81
-
Sound
8.5
-
Value
9.0
-
Price (USD)
$55
$80

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 6 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 6 years between them, that is a thin return - treat this as a restyle rather than a new platform.

  • D220266 yr newer
  • IE 100 PRO2020

Specifications

D2IE 100 PRO
Type
Wired IEMs
Wired IEMs
Price (USD)
$55
$80
HearWiki score
81
Not scored
Released
2026
2020
Availability
Sold new
Discontinued
Driver
2DD
-
Driver type
dynamic
-
Driver configuration
2DD
-
Drivers per side
2
-
Frequency response
-
20 Hz - 18 kHz
Impedance
20 Ω
-
Sensitivity (dB/Vrms)
-
115
Connector
2-pin 0.78 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

Sennheiser IE 100 PRO

The Sennheiser IE 100 PRO is a wired in-ear monitor designed for stage and studio use, offering a straightforward, durable build at an accessible price point. It delivers a clear and balanced sound signature with a frequency response spanning 20 Hz to 18 kHz and a high sensitivity of 115 dB, making it easy to drive from a variety of sources. While it lacks active noise cancellation, its secure fit and passive isolation make it a reliable choice for monitoring applications.

  • Pro:High sensitivity (115 dB) for efficient volume with most devices
  • Pro:Clear, balanced tuning suited for monitoring and critical listening
  • Pro:Durable, over-ear cable design with replaceable parts
  • Con:No active noise cancellation, relying only on passive isolation
  • Con:Limited frequency response on the high end (18 kHz) compared to some rivals
  • Con:Requires a wired connection, no wireless or Bluetooth support

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 D2Sennheiser IE 100 PRO