Gary, P.Sound at Harmony Central saw my posting there and suggested that I post it here at you board for your attention as you are the expert. I just purchased a Dawbox and a used Apogee PSX-100SE converter. My question is this: what would be a wise choice for a soundcard to I/O AES/EBU and analog between the computer and the converter? Would another type of interface (e.g., firewire) be an option? Steve G PS: and since posting this question I purchased a Lynx AES16 from Lynx Studio Technology.... oh please tell me it will work with my Apogee PSX-100SE.