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