I'm thinking about going to get a pair of skull candy crushers(Not skullcrushers). And I was just wondering how good the bass is. I heard there is actually two real sub woofers in them. And do they take any batteries?

ok so my birthday is coming up and with my birthday money i want to buy myself a pair of ath m50s with a removable cable mod off of http://www.soundprofessionals.com and i was wondering if the removable cable messes with the sound quality at all. And also if it just comes with the jack so you...