ADAT card on the back of the D32XD will give you eight outputs simultaneously, or you can use the Optical Out. I use an M-Audio Transit which plugs into a USB2 port and will run 44.1, 48 and 96K at 24bit from the Optical. Alternatively you may want a USB device with ADAT... I think Behringer do one but, like the d32xd, you have to buy the ADAT card as an extra. Good luck. I love my D32XD.