12SN7GTA RCA coin-base branded GE NOS 1980 (12.2/12.2ma) 1-2% section balance

12SN7GTA RCA coin-base branded GE NOS 1980

12.2ma Gm=3000

12.2ma Gm=3200

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