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Cozoy D1 Review: Did the Classic Brand Return with a Winner?

Review
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June 20262 min
Cozoy D1 Review: Did the Classic Brand Return with a Winner?

Disclaimer

This set was sent directly by Cozoy in exchange for an honest review. You can find it in their official AliExpress store.

Intro

Cozoy is a brand that more seasoned Chi-Fi enthusiasts may remember. After a long period of inactivity, it was acquired in 2025 and is now led by the former EPZ IEM tuner. The D1 marks their return. It is a single dynamic driver budget IEM, and here are my impressions.

Gear used

- Stock cable

- HE Sonic eartips

- HE Sonic Galaxy Edition eartips

- Penon Liqueur Orange eartips

- Snowsky Echo Mini

The Cozoy D1 IEMs and their vibrant purple braided audio cable resting on a white background. They are displayed next to two small, sealed clear plastic bags containing the included stock silicone eartips.
The Cozoy D1 IEMs and their vibrant purple braided audio cable resting on a white background. They are displayed next to two small, sealed clear plastic bags containing the included stock silicone eartips.

Pros

- Great attack and decay for the price

- Precise imaging

- The 3D-printed shell is very comfortable and works especially well for smaller ears

- Cable and shells look very good in person

- Excellent isolation with the Galaxy tips

Average

- The tuning follows Harman 2019 quite closely. It is not my personal preference, but it may suit your taste

Cons

- Bass sounds slightly detached with most eartips, except for the HE Sonic Galaxy Edition

- Soundstage is very narrow and mostly in-head

- Being Harman-leaning, it lacks some air and pushes vocals a bit too forward for my taste

- The included eartips are a bit odd, and I struggled to get a proper seal with most of them

A top-down view of the Cozoy D1 in-ear monitors neatly displayed inside their black foam retail packaging. The glossy blue resin shells with the silver Cozoy logo are attached to a vibrant purple braided cable. The lower section of the foam insert features a compartment clearly labeled "ACCESSORY BOX".
A top-down view of the Cozoy D1 in-ear monitors neatly displayed inside their black foam retail packaging. The glossy blue resin shells with the silver Cozoy logo are attached to a vibrant purple braided cable. The lower section of the foam insert features a compartment clearly labeled "ACCESSORY BOX".

The D1 feels like a solid restart for Cozoy. I think most people will find it enjoyable, and the technical performance is strong for the price.

With the HE Sonic Galaxy Edition tips, it becomes a genuinely enjoyable set. I would like to see Cozoy experiment with other tuning styles in the future. The potential is clearly there.

A macro photograph of the two Cozoy D1 IEM shells resting on a white textured background. The image highlights the deep glossy blue faceplates with subtle dark striations, the silver "COZOY" branding, and the ergonomic 3D-printed black resin inner body.
A macro photograph of the two Cozoy D1 IEM shells resting on a white textured background. The image highlights the deep glossy blue faceplates with subtle dark striations, the silver "COZOY" branding, and the ergonomic 3D-printed black resin inner body.
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