(!!) (Best Quad #2) 6SH7 GE metal can NOS 1976 (8.6, 9, 9, 9mA)

1 matched quad) 6SH7 GE metal can NOS 1976

1 tube) 8.6ma Gm=4200

1 tube) 9.0ma Gm=4300

1 tube) 9.0ma Gm=4200

1 tube) 9.0ma Gm=4000

Good NOS mA range 9-11ma

Good NOS Gm range 4500-5000