really, please try and stay away from "5.1" phones. good stereo coupled with some advanced processing for headphones on the sound card will have you covered.
hd555 can be easily driven without an amp; hd595 will need an amp.
btw, if you can live with a bit smaller earpads, check here:
http://www.buy.com/prod/sennheiser-lite-wgt-stud-monitor-headphn-nic/q/loc/111/205713938.html
here's the original thread:
http://www.head-fi.org/forums/showthread.php?t=261641
these are somewhat bellow 595 but well worth the price.
hd555 can be easily driven without an amp; hd595 will need an amp.
btw, if you can live with a bit smaller earpads, check here:
http://www.buy.com/prod/sennheiser-lite-wgt-stud-monitor-headphn-nic/q/loc/111/205713938.html
here's the original thread:
http://www.head-fi.org/forums/showthread.php?t=261641
these are somewhat bellow 595 but well worth the price.