(!!!!) (Best Quad) 8417 RCA by Sylvania NOS 1960's - 1970's (100, 101.6, 103, 102ma)

1 matched quad) 8417 RCA by Sylvania NOS 1960's - 1970's original boxes Iplate= V1 100.0ma top and side getter mid-1970's V2 101.6ma top getter only 1967 V3 103.0ma top and side getter mid-1970's V4 102.0ma top getter only 1973 era Iscreen= V1 4.6ma V2 4.8ma V3 4.8ma V4 4.7ma Gm= V1 23,100 V2 22,500 V3 21,900 V4 21,800   Matched 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