Hoffman Amplifiers Tube Amplifier Forum
Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: firemedic on May 01, 2011, 09:39:37 pm
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The thrift store down the street has a Gulbransen 400 series organ for $100, that works. It is apparently from the '70s, that's all I know. I wanted to look inside but my little one was running around. Does it have a tube poweramp? Ideas?