I used the last one month, it has very good bass, I find that it is accurate enough in the whole spectrum, at the same time I don not have too many references casques.Bon level there is no hell of a look, but It's very good job, namely, broadcast sound in the ears of a singer, he recorded for that without repiquage.Par against, that s not the kind of headphone that can keep hours of the skull, passque that it breaks a little fact, the skull! I think this is due to the heavy bass that it retransmits.