Crack+speedball.... Small consistent "tapping" sound when everything is quiet

[gusisboosted]

Hey guys.

So this is my first tube amp, I have been doing some research and finding mixed answers on this issue.

So..... when ever I have no sound playing, there is a constant very light tapping sound coming out of my left headphone driver.
I tested my HD650s and plugged them into my old MICCA ORIGEN to make sure it was not the drivers and everything was silent.

Is this a product of the tubes?
OR should there literally be complete silence when nothing is playing through them?

Thank you for the help!

[Paul Birkeland]

Try switching your cellphone to airplane mode to see if it is causing the problem you describe.