(!!!) (Recommended Pair) 8417 GE NOS 1969 and 1986 same build (91ma and 94.6ma)

1 pair) 8417 GE NOS same build

1 tube)  91.0ma Gm= 21,600 (1986)

1 tube)  94.6ma Gm= 21,720 (1969) (IZ)

Tested on Amplitrex:

Vplate=300V

Vscreen=300V

Vgrid=-12V

Good Ma range 90-110ma

Good Gm = 20-23,000

Recommended For:

- UFO

- Fisher SA-1000

- Dynaco

- Quicksilver

- Dynaco Mark VI introduced in 1976

- Gibson

- Bogen

- Harmon Kardon