Tubes

6S4A .

6S8GT .

6SA7GT or GT/G

6SC7

6SF5 .

6SH7 .

6SJ7 or GT or VT116 USED or off-brand. Not tested, no guarantee

6SL7GT #1 USED, test at least 104% of minimum for a good tube.

6SN7GTB GE

6SN7WGT Raytheon Brown Base (1 available)