Sonzera 20 has become noisy

This post was a very good (and enlightening) read. I'm about 1 paycheck from pulling the trigger on a 20(ish) watt tube amp. I've been considering Dr. Z, Fender DRRI and a few others. This post and PRS's follow-through have me looking more seriously at the Sonzera. Thanks for posting thru to the end.