• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

Tubes in your system?

IIRC, I heard the 6EU7 is a 6 volt version of the 12AX7. They are not as rare as you think. I have had two amps that used them. The Heathkit AA-32 and the Maggie Amp83. I have found 9 of them while tube hunting. Mostly US made with two Mullards thrown in. I have never rolled out the Mullard as it seems to be quite good.
 
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