c-500 and series 1 and series ll 400 have exactly the same power output all run on 80 volt rails.
when Bob and carver corp built these he had to change enough stuff to avoid law suite from phase linear.
I have gutted the c-500’s and gone full complementary with white oak control boards and don‘s dcp . There is thread on the build out there. I put together some kits for a couple of happy customers along the way. Also added a power button
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