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(!!!!!) (Best Pair) 8417 Sylvania NOS 1970's same date codes (117.4ma and 118ma)

(!!!!!) (Best Pair) 8417 Sylvania NOS 1970's same date codes (117.4ma and 118ma)

$ 219.99

1 pair) 8417 Sylvania NOS 1970's same date codes excellent condition

Iplate=

117.4ma

118.0ma

Iscreen=

4.6ma 

4.5ma

Gm=

21,400

21,200

 

 

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
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