TK16
Headphoneus Supremus
I have tubes like that, microphonic on tap, they are fine otherwise. I stopped tapping a while ago. I pair of tubes I gave away was highly microphonic on tap but otherwise ok.Both of my W396as are microphonic. They give off a nice Xylophone note when you tap the tube and these have been burned in a little more than 40 hours. Do you guys think these will keep being microphonic or will it go away after burning them in a bit longer?