(!!) (Best Single) 7AF7 Sylvania branded Hytron NOS round black plates NOS 1952 (9.6/9.4ma) 1-3% section balance

7AF7 Sylvania branded Hytron NOS round black plates NOS 1952 1-3% section balance

9.6ma Gm=2000

9.4ma Gm=1900

Good Ma range 8-9ma

Good Gm range 1800-2100

DUAL-TRIODE