Hoghntrpa Posted February 11, 2017 Share Posted February 11, 2017 Bought a used DT50 2-12 a few months ago. I get an annoying ringing sound (like metal on glass) only in topology III. I checked the tube restraints and they're tight. Only thing I can figure is the tubes' inners vibrating but doesn't make sense to only happen in TOP III. Anyone have any ideas about this? The amp works fine in that TOP but the ringing is driving me crazy. Quote Link to comment Share on other sites More sharing options...
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