Geno. In my experience anyway, this does not sound like noise something like the snubway would solve. The steadiness seems pretty intense, but I have heard this sort of static with a tube going, or from the tube socket having gotten loose, so a weak connection. If it is the latter, you may be able to tell if you gently turn the input tube (usually the culprit for me) in its socket to put more tension on the pin/socket connection, using a rag or something to protect your fingers, and see if it changes. Amp off and discharged, I have carefully tightened my tube sockets at times, with small sharp tool, especially for the small tubes like the inputs, I think I straighten out one of those dental picks to do it... been a while.

Thanks Will and James.

I will try swapping tubes between amps first, and see what that does. The noise is coming from my newer amp, at the moment.

After experimenting, I’ll report back.

Thanks guys,

Geno

My condolences Geno, sorry for your loss. This is of course the flip side of high dollar tubes: they don’t last forever.

Bummer, Geno. I’ve been using the 88 from Wathan for several years now. It’s the best of their input tube options that I have heard. Knocking on wood it keeps going strong. Will is right, the longevity is why I tried them in the first place and the great sound is a perk. The price has raised since they were first released. Don has them at $163 + shipping these days.