In Reply to: Amazing JJ 2A3-40's posted by SteveBrown on March 9, 2015 at 08:09:56:
Some 15-20 years ago, I built a switcheable amp and discovered that a fairly new Sovtek 300B worked fine at 2.5v on the filament.
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Follow Ups
- RE: Amazing JJ 2A3-40's - Paul Joppa 12:22:33 03/09/15 (0)