Hi yerself! If you go to the Apogee web site you'll find the pin-outs documented. Its pretty easy to figure out. But let me know if you have trouble.
The XLR input is balanced. I didn't use them.
I don't have a shot of the soldering, and I really don't want to disassemble what I currently have. But the soldering is easy--much easier than an iPod doc and much easier than a Canare F12 3.5 mm plug.
