Do I need to have my maz sr re-biased if I replace the power tubes? I am heading on tour next week, and I want to buy a backup set of power tubes. If something goes wrong during a show, can I replace the power tubes without re-biasing? Will this cause any harm to the amp?
Man, All I gotta say is, my power tubes must have been really worn down-- I put new Groove Tube EL-84's in my Maz Sr tonight, and holy f**k, the blanket has been removed. I didn't realize how much difference a fresh set of power tubes could make. I bought the amp used, so who knows the last time the dude changed those. I have never seen such a drastic change in performance before. Wow.