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(!) 12HG7=12GN7A GE USA NOS (52ma and 56ma)

(!) 12HG7=12GN7A GE USA NOS (52ma and 56ma)

$ 18.99

1 pair) 12HG7=12GN7A GE USA NOS

1 tube) 52ma Gm=30,000 tilted bottom mica

1 tube) 56ma Gm=32,500

Matched on Amplitrex

 

(12HG7=ruggedized frame-grid version of 12BY7A, uprated to 10 watts)

Pentode

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