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Cozoy D2 vs TRN BA5: which should you buy?

Specs, scores and condensed review verdicts for the Cozoy D2 vs TRN BA5, 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 3 of 4 measures.

  • Cozoy D2
  • TRN BA5
HearWiki score
81
-
Sound
8.5
-
Value
9.0
-
Price (USD)
$55
$50

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
  • BA52019

Specifications

D2BA5
Type
Wired IEMs
Wired IEMs
Price (USD)
$55
$50
HearWiki score
81
Not scored
Released
2026
2019
Availability
Sold new
Discontinued
Driver
2DD
10× balanced armature
Driver type
dynamic
balanced-armature
Driver configuration
2DD
-
Drivers per side
2
10
Frequency response
-
20 Hz - 40 kHz
Impedance
20 Ω
20 Ω
Sensitivity
-
101 dB/mW
Active noise cancelling
-
No
Weight
-
15 g
USB-C
-
No
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

TRN BA5

The TRN BA5 is a wired in-ear monitor that packs ten balanced armature drivers into a lightweight metal shell with a detachable 2-pin cable. Its sound leans toward a punchy mid-bass boost, with relaxed male vocals and slightly forward upper mids for detail. This makes it a solid budget pick for listeners who want a technical, non-fatiguing tuning without ANC or wireless features.

  • Pro:Ten balanced armature drivers for detailed sound
  • Pro:Lightweight metal build with detachable cable
  • Pro:Punchy mid-bass with clear upper mids
  • Con:No active noise cancellation
  • Con:No USB-C connectivity
  • Con:Relaxed male vocals may lack presence

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 D2TRN BA5