1 low noise tube) 12AY7 GE NOS 1955
1 section) 3.5ma Gm=1800
1 section) 2.8ma Gm=1700
Tested on Amplitrex
Good used Ma = 2 - 3ma
Good Gm = 1400-1500
- Leak Stereo 20 1962
- Fender Bassman 1954
- Clark Amplification Anthony Wilson Model 112 Combo
- Decware ZBox
- Fender 5E8-A
- Apex 460