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(!!!) (Recommended Pair) 12B4A GE NOS 1960's (39ma and 39ma)

(!!!) (Recommended Pair) 12B4A GE NOS 1960's (39ma and 39ma)

$ 20.99

1 pair) 12B4A GE NOS 1960's

1 tube) 39ma Gm=7550 GE rebranded Raytheon small "o" getter halo

1 tube) 39ma Gm=7300 GE rebranded RCA large "O" getter halo

 

Matched on Amplitrex

Vplate=140

Vgrid=-15V

Good Ma range 25-40ma

Good Gm = 6000

 

 

 

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