I'm always on the lookout for good value Chinese earphones, and bought the KC06 after reading its glowing reviews. My benchmark is the GR07 Classic. I found the midbass and mids of the Ostrys to be forward, and treble not lacking in detail, with average soundstage. Having said that the Ostrys are punchy and aggressive to my ears, good for rock and metal, and bcos of the mid-forwardness, good for vocals as well.

The GR07 however, is more balanced, detailed and refined with a wider soundstage. It doesn't have the attention-grabbing bass and mids of the Ostrys, but I found it suits more genres. Ultimately I still preferred the GR07, and used it more often. The more I used it the more tamed the infamous harsh treble was. Eventually I sold the Ostrys to a friend who really liked it for what it was. A worthy little puncher.