Ive used the n800 with the peachtree audio DECCO tube amplifier with built in usb
I was unable to plug it into any speakers at hte time though
it did show up on dmesg and whe n iplugged the same unti into my ubuntu desktop it worked automagically

ps next time im up at my audio shop, im going to test out working with a bel canto e.One Dac3
if it works, throw in some usher s520s and MITs i gaurentee that I can a damn near invisable sound image for under 2 large, all in a box smaller than a microwave (closest anology I could think of...)
the deccos nice, but bel canto is my favorite DAC