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(!!!!) (Factory Matched Pair) 8417-P Sylvania NOS same build 1960's (84ma and 85.5ma)

(!!!!) (Factory Matched Pair) 8417-P Sylvania NOS same build 1960's (84ma and 85.5ma)

$ 219.99

1 matched pair) 8417-P Sylvania NOS 1960's

1 tube) 

Iplate=84ma

Iscreen=3.6ma

Gm=20,100

1 tube) 

Iplate=85.5ma

Iscreen=4.5ma

Gm=20,450

 

Tested on Amplitrex:

Vplate=300V

Vscreen=300V

Vgrid=-12V

Good used Ma range 90-110ma

Good Gm = 21-23,000

  

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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