(!!) (Recommended Pair) 8417 Sylvania NOS 1970 era (92.6ma and 93.8ma) Title: 8417 Sylvania branded GE NOS matched pair

1 matched pair) 8417 Sylvania NOS 1970 era top and side getter

1 tube)

Iplate=92.6ma

Iscreen=4.0ma

Gm=21,300

1 tube)

Iplate=93.8ma

Iscreen=4.4ma

Gm=22,200

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