Posted by Cinciti on December 30, 2001 at 18:53:29:
I previously left a message concerning the 1973 Fender Champ that I recently purchased (Thanks again Ron!). As Ron suggested, I'm going to replace the 12ax7 tube with a 12au7. However, I noticed that there are many different name brands. Mullard, GE, Groove, and Sylvania. Is there a certain name brand I should get? Also, what is a vaccum tube and what is NOS?
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