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(!) (1 Pair) 31 Sylvania rebranded Zenith NOS 1940's (12.8ma and 13.6ma)

(!) (1 Pair) 31 Sylvania rebranded Zenith NOS 1940's (12.8ma and 13.6ma)

$ 34.99

1 pair) 31 Sylvania rebranded Zenith NOS 1940's

1 tube) 12.8ma Gm=1000

1 tube) 13.6ma Gm=1100 

 

Matched on Amplitrex

Vplate=180V

Vgrid=-30V

Good NOS Ma = 12.3ma

Good Gm = 1000

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