(!!) (Recommended Pair) 8417 Sylvania branded RCA NOS 1960's - 1970 (106ma and 108ma)

1 pair) 8417 Sylvania branded RCA NOS 1960's - 1970 top getter only

1 tube)

Ma plate=108ma

Ma screen=5.8ma

Gm=22,300

1 tube) 

Ma plate=106ma

Ma screen=4.7ma

Gm=22,500

Tested on Amplitrex:

Vplate=300V

Vscreen=300V

Vgrid=-12V

Good NOS Ma range 85-100ma

Good Gm = 21,000-23,000

For:

- UFO

- Fisher SA-1000

- Dynaco

- Quicksilver

- Dynaco Mark VI introduced in 1976

- Gibson

- Bogen

- Harmon Kardon