I am using the C3M0350120D as a replacement part for the C2M1000170D in the GRHV in my CFA Electrostatic without any issues. But this part seems to be unavailable now as well. Remarkable how one needs to wait a year for parts now.
I don't see many implementing the SS/ZF switching, I think beside one amp or so -- do most of you prefer and set it fixed to one of the modes and if so, which is it?
Cheers guys.