1 pair) 6EU7 GE NOS
1 tube) 46/32 and 47/32 (SM) 1978
1 tube) 47/32 and 47/32 (FC) 1970
Matched on TV-7D/U
(6EU7=12AX7 with non-tapped filament of 6.3V wired to pins #1 and #2 to reduce hum; claimed to be quieter than 12AX7)
- Sherwood
- Echoplex
- Gibson GA-5