(!!) (Best Value Pair) 71A Philco and Aristocrat used/good 1930”s similar build (25.6ma and 27ma) (same Gm)

1 pair) 71A Philco and Aristocrat used/good 1930”s similar build – different shape top mica

1 tube) 25.6ma Gm=1800

1 tube) 27.0ma Gm=1800

Tested on Amplitrex

Vplate=180V

Vgrid=-38V

Good Ma = 20ma

Good Gm = 1600-1700