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| | |-+  Hey What 504 owners,,,, 6ca7 and bias question
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Author Topic: Hey What 504 owners,,,, 6ca7 and bias question  (Read 1463 times)
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« on: December 06, 2019, 09:23:51 AM »


I'd like to try out some 6ca7 power tubes on my new-to-me Hey What 504,,,, is it okay to use 6ca7 tubes in this amp without any mods? and what would the "ideal" bias setting be?

thank you!
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