I'm not sure how many people have one of these, but I do, and for the longest time the manual was only available as a $20 hardcopy purchase from MOTU. They've finally made it available in a downloadable PDF version.
I threw a copy of it in the patch library here as well.
Bloody finally! I'm glad they did it, though. There's little reason to keep user manuals so locked down, especially for hardware.