Schematics for CAL Sigma II DAC

[Bernard]

I am looking for a copy of the CAL Sigma II DAC (NOT the 96/24 version). I contacted a couple of repair houses, both of which admitted to having them. One flat out refused to send me a copy, while the other said that the schematics were too large for their photocpier. Anyone here have a copy ? I would really appreciate it. I have upgraded the diodes to fast recovery diodes (made a big difference), and am looking to see what else I can upgrade. Yes, I do know that I should probably upgrade the caps to Black Gates.

Please PM me if you do have a copy.