Hi, I'm relatively new around here.  I just recently acquired an ESP950 and have read the E90 energizer leaves some to be desired.  Can someone suggest a good place to look for used Stax amps?  Would 580v pro bias be a good match for the 600v esp950?

wow, that looks impressive. good job sir!

is it still possible to build a exstata or khsshv?  whats the best source for getting the boards for these project, besides getting new batch done with gerber files?