Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => AmpTools/Tech Tips => Topic started by: Bub on August 11, 2008, 02:42:49 pm
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Hi, any recommendations on books for identifying tubes. I've done a ton of research but it's still hard to figure out who made what and when for whom ever with what logo with smooth grey plates before lunch and ribbed black plates after the war etc.
Thanks in advance
Rob