12SN7GTA GE branded Westinghouse low hours 1960”s (7.0/7.4ma)

1 low noise tube) 12SN7GTA GE branded Westinghouse low hours 1960”s in WB

7.0ma Gm=2500

7.4ma Gm=2700

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