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(!!) (#3 31 PAIR) 31 GE and Coronado same build different shape top mica 1940's (15.0ma and 15.6ma) (Highest Ma)

(!!) (#3 31 PAIR) 31 GE and Coronado same build different shape top mica 1940's (15.0ma and 15.6ma) (Highest Ma)

$ 29.99

1 pair) 31 GE and Coronado same build different shape top mica 1940's

1 tube) 15.0ma Gm=1200 GE

1 tube) 15.6ma Gm=1100 Coronado

 

Matched on Amplitrex

Vplate=180V

Vgrid=-30V

Good NOS Ma = 11 -12ma

Good Gm = 1000

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