I don't know if you guys are being updated on this thread, but if you replace the bridge rectifiers with IXYS Fred's your amps will actually sound a good deal better. You can look around the web, one guy found a replacement for the relay that doesn't chatter, another made a DC power supply for it. I bought the quiet one but don't recall the ordering information.
PS Audio 200C X vs. 200Delta?
I got a PS Audio 200Delta Power Amp in package buy from a dealer, and I can't find the info I'm looking for anywhere. Which is: Which came first? How are they related design and buildwise? And of course how do they compare soundwise? Anybody familiar with both of them?