The sound quality is a lot better than they make it seem, the marketing shows it being used with PSPs and phones, but they are capable of handling more than angry birds. I use these for PC gaming and music. The sound on these almost compare to my Sony MDR EX700LPs, but with a better soundstage and less bass extension.      I actually prefer these to the A40s, they are much more comfortable, after a while you forget they're there: soft, light, and almost no clamp, it basically just sits on your head. You don't lose much at all in sound quality...

     These aren't too great for hard rock or anything with high-pitched crashing sounds like symbols. It's ok at medium volume levels. Loud crashing symbols can sound more like high pitched white noise on these, it will get painful at high volumes.      With more bassy genres these are actually very good.