7591A Sylvania branded RCA used/75% 1968 (51ma, Gm=7,600)
$ 49.99
7591A Sylvania branded RCA used/75% 1968 (NY)
51ma
Gm=7,600
Tested on Amplitrex
Vplate = 300
Vscreen = 300
Vgrid = -10
Good used Ma range 40-50
Good used Gm range 8,000 - 9,000
Recommended for
AUDIO GUILD CORP BONHAM 330 1960's
Ampeg Gemini II G-15
Ampeg Reverberocket II 1960's
McIntosh 225
Mcintosh MA230 early 60's
McIntosh MAC-1500 1965
Scott
Harmon Kardon
Fisher Receivers
Sansui
Sherwood S5000II
McIntosh 225
Fisher 500C 1964
Scott 299C
Scott LK-72
Scott 340B 1964
Univox U305R
Sansui 1000a 1970
Eico ST-70
See more: vacuum tube