(!!!) (Best Value Pair) 8417 Sylvania branded Dumont and RCA NOS 1977-1980 (84ma and 81ma)
$ 219.99
1 pair) 8417 Sylvania branded Dumont and RCA NOS top and side getter
1 tube) Iplate= 84ma (Dumont)
Iscreen= 3.8ma
Gm=20,000
1 tube) Iplate =81ma (RCA)
I screen = 5.0ma
Gm= 19,400
Tested on Amplitrex:
Vplate=300V
Vscreen=300V
Vgrid=-12V
Good NOS Ma range 80-110ma
Good NOS Gm = 20-23,000
Recommended For:
- UFO
- Fisher SA-1000
- Dynaco
- Quicksilver
- Dynaco Mark VI introduced in 1976
- Gibson
- Bogen
- Harmon Kardon
See more: vacuum tube
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 (Best Value Pair) 8417 Sylvania branded Dumont and RCA NOS 1977-1980 (84ma and 81ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/7_bc935b80-6ffd-4e98-868b-49c47c3adf37.jpg?v=1792248854){kind=link}
 (Best Value Pair) 8417 Sylvania branded Dumont and RCA NOS 1977-1980 (84ma and 81ma) "Pin It")