techPowerUp posted a review on the Yuin OK2 Earphones
A quote from the article:
>> Yuin OK2 Earphones Review
Yuin OK2 is the name of the second best earphone from the Chinese brand Yuin. Unlike their bigger brother these earphones are easy to drive, and are also optimized for use with a normal modern DAP. The OK2s can function both as normal earbuds and as in-ears which makes them quite unique.
>> Yuin OK2 Earphones Review