Noise through speakers when I tap the Source Switch.

I have a Unison Primo, only a few years old. I just noticed that when I tap the

knob to select source I can hear it through my speakers. Could there be a problem

with something? It's a hybrid, tube pre. Other that that it's quiet.

Thanks for any help.

vinylvin04-13-2020 4:29pm

yogiboy Details Discussions Posts This discussion Message User 5,504 posts 04-13-2020 at 04:35pm Copy Comment URL Report Comment Edit Delete It sounds like one of the tubes is microphonic. Try tapping on each tube and see if you hear the noise!