I think the data center is more about just getting your iShit up in the cloud. All your photos, music, tv shows etc. accessible anytime anywhere on your iPod, iPad or iPhone. Jobs kept hammering on about how "Apple is the world's largest mobile company." Can't get much more mobile than that.
Pass Labs X2.5. You'd have to find one used. The newer Pass preamps do not have a balanced loop out.
http://www.passlabs.com/pdf/old%20product%20manuals/x2.5_om.pdf
EDIT: Looks like the Aleph-P would work too. Those come up on A'gon quite often.
http://www.hififever.com/forum/files/apman_134.pdf
Hired a bodyguard for the wife. Kinda weird. Former South African special forces blah blah blah. If it's going to turn out like The Bodyguard, I hope he's been lifting weights. And I simultaneously deny that I ever said that.
Here's a dumb question, but where is the flat bit of the otherwise circular O2 pad actually supposed to be oriented relative to the outside of one's ear?