I just picked up the a pair of the SHE-3580s and SHE-3575 with the mix. I figured they would be the exact same except one with the mic. I just tested both of them, and let me tell you, right out of the packaging, the 3580s sound WAY better than the 3575. The 3575s are lacking in the bass dept IMO.
Mainly listening to drum n bass atm. I think I am going to let the 3575s settle in and see if the bass gets any bigger.
Edited by jarbro - 2/10/12 at 1:03pm