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Questions about tubes and gear that glows. FAQ

RE: hum from new tube

Strange story but true. My Sherwood, when I put new linestage tubes it hums for about 10 hours then the hum starts to disappear.

run it for a few hours and see if the hum diminishes. If not see if the hum follows a particular tube or try putting back your old tubes to see if it's not the amp humming.

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