I picked up a Klangfilm 063a that I need to build a PSU for. Most of these had an m7 type capsule and an AC701 tube. Mine has a 6AU6 and a smaller Schoeps looking capsule with small holes around the back similar to m221b capsules. I've reached out to Schoeps as they made most of these, and they kindly confirmed it probably is very similar to Schoeps a CM51schematic. I've tried to trace out the few differences on this schematic in red. Can someone help me verify and suggest any PSU changes, or should I make it identical? Would something like Dany B's m49 PSU boards work here with a 250VAC plate transformer? I saw on another Schematic for CM51 that the Heater is -5.7 so his boards might not work. Maybe could cut the heater ground trace and swap the choke to the negative path, I'll have to look those over again.