(!) (Best RCA Pair) 6SG7 RCA metal can NOS 1961 (11.6/12.4ma)

1 matched pair) 6SG7 RCA metal can NOS 1961

1 tube) 11.6ma Gm=5000

1 tube) 12.4ma Gm=5100

Matched on Amplitrex

Vplate=250V

Vscreen=125V

Vgrid=-1V

Good Ma 10-12ma

Good Gm=4500-5000