bluser12 Posted April 27, 2010 Share Posted April 27, 2010 Is it alright to change the attenuator position on a tube amp while the amp is powered up? If the answer is no, and the power should be turned off, do I have to let the tubes cool down before switching? Link to comment Share on other sites More sharing options...
m-theory Posted April 27, 2010 Share Posted April 27, 2010 Technically, you probably should put the amp on standby, but I never have. Link to comment Share on other sites More sharing options...
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