Could someone somment on wether my X-FI xtreme music 5.1 sound card can properly run these headphones the way they're meant to be listened to or is an amp needed? I keep reading about poeple saying a sound card is enough, while others recommend an amplifier
. I'm not really interested in purchasing an amp (even if they're are some inexpensive ones)and am really just looking for some great straight plug headphones.