HELP Audio Alchemy DTI Pro 32

All right -- it's years later and here I am again. I have managed to misplace my users manual for the AA DTI Pro 32. That means I cannot set the dither (there are LEDs on the front to tell you where you are set) and thus have no clue as to when I have the settings right for HDCD or 24 bit or 20 bit etc.
Anyone out there who can share the info -- I would greatly appreciate it.
Thanks.