Members wilg8 Posted January 24, 2009 Members Share Posted January 24, 2009 ive got a b-52 100 watt head that uses 5ar4/gz34 rectifier tube, can i use a 5u4gb in place of it??? Link to comment Share on other sites More sharing options...
Members joemudge4 Posted January 24, 2009 Members Share Posted January 24, 2009 You'll probably loose some low end tightness, and I think you'll need to rebias the amp. The 5u4gb will probably lower the plate voltage on the tubes. Link to comment Share on other sites More sharing options...
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