(!!!!!) (Best Pair) 8417 Sylvania NOS 1970's same date codes (127.4ma and 128ma)
By Tube World
$ 269.99
1 pair) 8417 Sylvania NOS 1970's same date codes excellent condition
Iplate=
127.4ma
128ma
Iscreen=
5.1ma
5.5ma
Gm=
23,100
22,900
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
See more: vacuum tube
Share:
 (Best Pair) 8417 Sylvania NOS 1970's same date codes (127.4ma and 128ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_8710d8e3-edb3-48e7-a8fd-a23c0f6980d4.jpg?v=1702223844){kind=link}
 (Best Pair) 8417 Sylvania NOS 1970's same date codes (127.4ma and 128ma) "Pin It")