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...
i had some cary 300b sigs. one tube was microphonic. i eleminated it by making sure my tubes were seated very well and isolation points on my amps and amp stands. problem was solved for me
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