So what's the big difference between these standards? Sorry, let me back up. I've been engineering in Jamaica for a bit and noticed that power is regulated thru 110V / 50Hz sockets... so i started wondering, what can this do to gear? How do speakers respond differently (eg. if I had a set of KRK V8 here and monitored a session, how would that same mix translate in the US/Canada?). I've heard that the bass is lower here, hi freq are duller and a whole hosts of myths. i'm tryin to make sense out of nonsense... what's the overall deal?