i be not a serious stereophile ... but i know a thing or two about bad headphone . especially the kind you get for free with every portable audio product you buy . bottom line , the quality for these headphone be amazing . you can turn up whatever you be listen to , and not worry about distortion . do i mention the price ? dirt cheap my friend , dirt cheap . the only downside be they do not fit comfortably for people with glass , and there be a little plastic piece in the center of the earphone that can be bothersome if not positioned perfectly . or maybe it be just my ear ?