out of the box, with no burn in, plugged them in and... checked for some club-bathroom type effects that somebody might have activated on my pc's sound card at work... there were none.
superbass... more like solely (sh*tty) bass.
the difference between these and the sony stock buds is like the difference between the sony's and the sf5pro. plus, if you shake your head too much (read: 2-3 times) they fall off.
bottom line: don't buy (wish i had this advice before getting them. well, to be honest... i did, but it wasn't from here so i ignored it)