In Reply to: problem with new tubes for my 91A posted by vinnie2 on June 12, 2015 at 09:52:12:
Just got through looking at Duncan's tube data site and it says that the 5A/157D is not equivalent to the EF37A even though several other sites on the web claim it is. I am inclned to believe Duncan after listening to them in my amp. Let the buyer beware and all that happy horse pucky. Dang!
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Follow Ups
- update - vinnie2 10:27:43 06/12/15 (0)