Good mono sound quality and volume5. Treble is pretty smooth with some splash and not sibilant or harsh. It does come with 6-8 different ear pieces so you can choose which one suits you best, which is a very nice feature. I pulled them out of the package and opened the case. Haven’t worn any since. Please let us know. FAIL You get a 6. If I had not carefully removed the excess material from the inside of the connector I would have definitely had to return it. Out of the box the stick x/y axis were jittering all over and unstable.