1 low noise pair) 6FQ7 GE NOS green printing 1960's

1 tube) 7.0/7.2ma Gm=2500/2600 

1 tube) 7.5/8.0ma Gm=2600/2600 

Matched on Amplitrex

Vplate=250V

Vgrid=-8V

Good Ma = 7-9ma

Good Gm = 2300-2500 

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