(!!) (Best Pair) 5719 Sylvania Gold Brand NOS 1952 in white boxes (0.9ma/0.8ma) 1-3% matched

1 matched pair) GB-5719 Sylvania Gold Brand NOS 1952 (similar to 6AD4)

1 tube) 0.9ma Gm=2100

1 tube) 0.8ma Gm=2000

Matched on Amplitrex:

Vplate=100V

Vgrid=-1V

NOS mA = .75mA

NOS Gm = 1700

– T3 subminiature audio triode

– 5719=6AD4 with same Mu but Gm raised to 1700

– Computer-Rated