had my khartago's open yesterday to bias them. Looks to me all you need to do is remove a 0 ohm resistor, add in a second rca jack and corresponding cable. And rewire the speaker outputs. Easy job if you know what you are doing. But my advice leave it up to klaus!
The boards themselves are the same, Except in mono mode one channel amplifies the positive and one channel the negative whereas in stereo mode each channel amplifies seperate L and R channels.
