Members CLR4TKOFF Posted January 23, 2013 Members Share Posted January 23, 2013 Hello!I recently purchased a Studiotone ST20-C amp. I love it! It sounds beautiful, and it is very well made. I would like to purchase a spare set of tubes. I see in the Operating Instructions that the amp contains these tubes:Preamp: ECC83 12AX7 7025 Power tubes: EL84 (2, matched, duet)Does anyone know the manufacturer of the tubes used by Koch? I would like replacements to duplicate the sound. I don't want to take out the existing tubes to check, as I know they are fragile. I've tried to contact Koch, and had no response. They sell replacement tubes, but they are located in the Netherlands, and I'd like to find a local sources.Any good suggestions on where to buy new tubes?Thanks very much! Link to comment Share on other sites More sharing options...
Members GilmourD Posted January 23, 2013 Members Share Posted January 23, 2013 Tubes really aren't that fragile. Just don't drop them or give them to a toddler. Link to comment Share on other sites More sharing options...
Members jrockbridge Posted January 23, 2013 Members Share Posted January 23, 2013 I don't know much about those amps. I've been happy with the tubes I've gotten from both tubedepot and eurotubes.For some reason, I thought a Cuntz guitar might go well with a Koch amp. But, that's just a hunch since I've never owned either of those brands.http://www.cuntz-guitars.de/de/galery/electrics Link to comment Share on other sites More sharing options...
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