(!!!) (Recommended Pair) 6FQ7 Sylvania NOS 1960's same build (6.5/7.2ma and 6.8/7.6ma)

1 low noise pair) 6FQ7/6CG7 Sylvania NOS 1960's same build

1 tube) 6.5/7.2ma Gm=2300/2350 

1 tube) 6.8/7.6ma Gm=2300/2500 branded Philco

Matched on Amplitrex

Vplate=250V

Vgrid=-8V

Good Ma = 7-9ma

Good Gm = 2300-2500

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