(!!) (Pair) 6SJ7 GE metal can NOS 1977 (2.5ma and 2.7ma)

1 pair) 6SJ7 GE NOS 1977 (ML)

1 tube) 2.5ma Gm=1500

1 tube) 2.7ma Gm=1600

Matched on AMPLITREX AT1000

Vplate = 250V

Vscreen = 100V

Iplate = 2.5-3ma

Gm= 1500-1700

for:

Fender Champion 600 circa 1950
Epiphone Electar
Gibson BR9