(!!!!) (Best Pair) 12SN7GTA GE coin-base side getter NOS 1980 (10.4/10.8ma and 10.4/10.0ma) (same Gm)

1 pair) 12SN7GTA GE coin-base side getter NOS 1980 (IR)

1 tube) 10.4/10.0ma Gm=2900/2900

1 tube) 10.4/10.8ma Gm=2900/2900 production stain side of glass

– Mapletree
– McAlister Audio MA-10
– Tom Tutay preamp