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In Reply to: RE: Mullard EL34 tubes posted by Mendel on December 6, 2014 at 10:18:39:
His two xf3 B4C3 and the xf4 B9F3 were all made in the Blackburn plant. That's what the "B" stands for.
Tre'
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- RE: Mullard EL34 tubes - Tre' 11:00:53 12/06/14 (0)