(!) 12HG7=12GN7A GE USA NOS (52ma and 56ma)
By Tube World
$ 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
See more: vacuum tube
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 12HG7=12GN7A GE USA NOS (52ma and 56ma) "Pin It")