Dual power triode, ruggedized 6AS7G. Intended for use as series voltage regulator.
Amplification factor µ = 2.
Substitution for models 6080, CV2984, E6080, ECC230, 6080WA, 6080WB, 6080WC, 6520, 6AS7GA, 6AS7G and the russian 6N13S.