Make it quiet, yet one of the biggest bug bears regarding computer audio (from Mac and PC) was due to power supplies introducing noise into the mains, and operating systems running tasks in backgrounds. Do you also remember early attempts of computer audio with valve circuits in motherboards? Inside a computer (MAC or PC) used to be regarded as a pretty poor place for audio circuitry in the past.
Great points, Steve; highly relevant, and often overlooked by the pro-computer audio fraternity... Switch-mode PSUs, widely used in computers, are not in my experience in any way 'hi-fi friendly' - quite the opposite in fact, they're as 'noisy' as hell. No discerning hi-fi designer would feature them in any of his (or her) designs, and equally, I suspect that no discerning audiophile/enthusiast would use equipment featuring one in their system. I certainly wouldn't.

Jeez, at this rate it looks like I should just put my dinner in the bin!



Marco.

P.S Tim, Steve (Toy) is absolutely correct in his assessment of our earlier situation.