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(!!) (#1 420A - Best Pair - 1-2% matched) 420A Western Electric NOS 1979 (1.9/2.0ma and 2.0/2.1ma)

(!!) (#1 420A - Best Pair - 1-2% matched) 420A Western Electric NOS 1979 (1.9/2.0ma and 2.0/2.1ma)

$ 89.99

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

1 tube) 1.9/2.0ma Gm=1700/1700

1 tube) 2.0/2.1ma Gm=1700/1800

 

Matched on Amplitrex

Vplate=180V

Vgrid=-.1V

Good Ma = 1.5-2.2ma

Good Gm = 1500

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