7581A GE branded RCA used/good 1973 (EL)

56ma

Gm=5300

Good used mA range 55-70

Good used Gm range 5000-6000

Recommended for

- Ampeg VT22
- Fender Bassman 1969
- SunValley VP-3488SE
- Fender Vibrolux reverb 1971
- Fender Super Reverb 1970