(!) (Single) 12SN7GTA RCA black plates NOS 1960”s (8.4/8.0ma)

1 low noise tube) 12SN7GT RCA black plates NOS 1960”s

8.4ma Gm=2600

8.0ma Gm=2600

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