Head-Direct is a headphone retailer that carries a lot of niche Chinese Hi-Fi brands. Yuin is a relatively small Chinese based earbud manufacturer that makes some really radical earbuds. Recently we reviewed the brand new OK-series earphones, but now the time has come to revisit the older PK1 earbuds. Unlike the new OK-series from Yuin the old PK-series earbuds cannot be converted into canalphones so if you are looking for some degree of isolation you should skip past the PK-series.
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*Review: techPowerUp (
http://www.techpowerup.com/reviews/H...ct/Yuin/PK1/)*
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