Search results

I'm pretty sure it's not the tubes themselves, see the OP above.

Seriously though, it's an SMD board and (to me) difficult to tap on anything specific other than the green cap, tubes and daughter boards, footswitch board. Anyway, I can say the sound comes from the left-hand side of the board and is perhaps more pronounced tapping on the tube and tube socket...

How about one of these?

I've got a JC Emerald that has become "microphonic", for lack of a better term. Tapping on the enclosure or the knobs creates a thump from the amp, almost like playing a drum. I've tried replacing the JC Emerald tubes (both or single) with new tubes or tubes from working, non-microphonic sushi...