Building the Audio Note Kit 1 SET amp...

I dont know about that Dan. You have taught us a thing or two while making us drool over your DIY Garrard 401 plinth and I will not forget your Class D amp I am storing that note away for future reference.

Grannyring-Thanks for the Clarity Cap tip. I did not know about them. I am contemplating building a 2nd amp and thinking about the power supply so your tip is timely.

Best to Rebbi-a crazy journey but well worth it. Once the problem is solved there will be some serious music making :)

Al, thanks, I see that pages 4&5 of section 7 of the manual that you referenced above show physically larger caps in the C1-C4 positions. Without rereading a lot of the thread, I don't know what symptoms are being experienced other than guessing that an oscillation could be present by those caps being electrically missing.

Grannyring, Looks like the Wima DC Link caps I am trying in my power supply and the ClarityCap TC600 you are using are both Metallized Polypropylene. Looks like we are on the same path. Regards-Jet

Well, I re-soldered all the joints between the valve base tabs and the pads on the Driver Board PCB but whatever's going on wasn't fixed because I'm still getting a distorted signal on bass-heavy material on the amp.
Just got an email from Pete (Digital Pete) Fulton in Florida that my finished driver board is shipping 2-day post tomorrow. So, I should be up and running over the weekend! I hope by comparing the two boards to at least figure out what the problem is/was with my Driver Board!

Okay:
I received my new Driver PCB from Digital Pete in Florida, ANK's designated builder for prebuilt ANK kits. It arrived on Friday. As you'd expect, the workmanship is first-rate.
I've managed to remove my driver board from the amp and hope to get Pete's board installed completely by Monday. I'll report back when I do.