Ostry KC08A

The earbud housing is made of metal and the fit is better than the MX500 type.

The texture is also much better.
Burn-in requires about 200 hours.

The sound is clear, almost a mild U-shape, and at the same time the sound resolution is such that the distortion of drums and guitars sounds "real" without being crushed.
The sound is impressive, with a wide soundstage that only earbud can provide, and a bass heavy.

Includes a uniquely designed foam cover that provides complete coverage while allowing high frequencies to pass through (the foam cover exposes the midrange).

In my source environment, I am connected to the iFi Gryphon.

This earbud seem to be underrated. There are many other expensive earbuds with good sound quality.
If you have a chance to listen to this, please do.

Thanks for reading!