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(!!!) (Best Pair) 420A Western Electric NOS 1979 (1.6/1.9ma and 1.6/1.9ma)

(!!!) (Best Pair) 420A Western Electric NOS 1979 (1.6/1.9ma and 1.6/1.9ma)

$ 119.99

1 pair) 420A Western Electric NOS 1979 1-2% matched

1 tube) 1.6/1.9ma Gm=1500/1600

1 tube) 1.6/1.9ma Gm=1400/1500

 

Matched on Amplitrex

Vplate=180V

Vgrid=-.1V

Good Ma = 1.5-2ma

Good Gm = 1400-1500

See more: vacuum tube
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