My audio setups:
Gaming Rig Speaker Setup: Asus Xonar STX => M-Audio BX8A deluxes
Gaming Rig Headphone Setup: Asus Xonar STX => Headroom Micro Amp => HF2 / HD650 for music, AD700 w/ boommic for gaming
Home Theater Speaker Setup: Onboard Optical Out=> Pioneer VSX-1016 => Bic Acoustech 5.1 horn tweeters (Klipsch Knock Offs)
Home Theater Headphone Setup: Onboard Optical Out=> Pioneer VSX-1016 headphone out => HD650
Portable Setup: iPhone 4 => Triple Fi 10vis (Fisher Hearing custom remold)