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In Reply to: EI Kt90 posted by setlow on August 5, 2014 at 11:02:09:
IIRC the desireable typeII had welded.plates. you would still need to test to test existing tubes to match, however ,depending on amp biaising.
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Follow Ups
- RE: EI Kt90 - unclestu 23:13:54 08/05/14 (0)