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(!) (Recommended Pair) 12B4A Sylvania NOS 1960's (26ma and 27ma)

(!) (Recommended Pair) 12B4A Sylvania NOS 1960's (26ma and 27ma)

$ 18.99

1 pair) 12B4A Sylvania NOS 1960's same build in white boxes
1 tube) 27ma Gm=5800 (red printing)
1 tube) 26ma Gm=5800 (white printing) ITT

 

Matched on Amplitrex

Vplate=140

Vgrid=-15V

Good Ma range 25-40ma

Good Gm = 6000

 

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