Krell KSP7B external power supply

[cpcc]

I've searched all forums and I don't see this specific supply mentioned.

I have a KSP-7B with no power supply. Any idea where I might find the voltages, currents and pin assignments on the preamp power connector? I understand the Krell approach to power supplies is rigorous. Does anyone have experience with building this or other external Krell supplies?
Thanks
Chris

 

[TheDecameron]

Its a straight +20v, gound, -20v on the three pins into the preamp