8417 GE used/good 1970's (75ma)
By Tube World
$ 69.99
8417 GE used/good 1970's
75ma
Gm=16,650
Tested on Amplitrex:
Vplate=300V
Vscreen=300V
Vgrid=-12V
Good used Ma range 70-90ma
Good used Gm = 17,000 - 19,000
For:
- UFO
- Fisher SA-1000
- Dynaco
- Quicksilver
- Dynaco Mark VI introduced in 1976
- Gibson
- Bogen
- Harmon Kardon
See more: vacuum tube