Right now I'm using the Nuforce Icon via usb into HD600's and speakers, I think that qualifies.
One Headphone, amp, and source is minimal for me. Anything beyond that doesn't count.
Thank god that Birthday Girl isn't on the album... ugh...
I can't wait for people to hear it on the radio or whatever and buy the album, and then get blasted in the face with stuff like 75 Bars.