300B tube ringing


when i lift the needle off the record, i sometimes hear "tube ringing"from the left speaker..i tapped the 300b tube with a q-tip (lightly) & i can hear the microphonics.
any way i can take care of this??? Do they make tube dampers for 300b tube? Who? Where?
thanks...
hifi1970

Showing 1 response by herbies

We have found the 300B tube to be among the most problematic of all the power tubes in regards to microphonics. You can find excellent, inexpensive damping instruments for the 300B tube at Herbie's Audio Lab.

Herbie's Audio Lab

Warm regards,

Steve Herbelin
Herbie's Audio Lab