!!!) (Best Single) 8417 Sylvania NOS 1970”s (113.5ma) Title: 8417

8417 Sylvania NOS 1970 era top and side getters

Iplate= 113.5ma

Gm= 23,700

Iscreen=5.0ma

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