It comes with and 80-gig HD, upgradeable at this time to 500 gigs.
Dikki, AJ played an audio-loop style and it played flawlessly every chord he threw at it, at least to my ears.
I think you would love this thing once you get to hear it. I'm sure I'll have one soon and you can meet me somewhere and test it to your heart's content. I'll buy lunch!
I didn't ask about sample format. I'm sure AJ will jump in here once he gets back to Philly and unwinds awhile. He has had a hectic, across the world journey the past few weeks.
DonM