(!!!) (~ Recommended Pair ~) 420A Western Electric NOS 1979 (1.6/1.7ma and 1.6/1.6ma)
$ 84.99
1 pair) 420A Western Electric NOS 1979 closely matched
1 tube) 1.6/1.7ma Gm=1500/1500
1 tube) 1.6/1.6ma Gm=1450/1500
Matched on Amplitrex
Vplate=180V
Vgrid=-.1V
Good Ma = 1.5-2.2ma
Good Gm = 1500
See more: vacuum tube
Share:
 (~ Recommended Pair ~) 420A Western Electric NOS 1979 (1.6/1.7ma and 1.6/1.6ma)&Category=vacuum tube&ImageURL=http://cdn.shopify.com/s/files/1/0333/7633/products/1_2baac9e7-f2f1-416a-bf00-89f409c4f244.jpg?v=1571438823){kind=link}
 (~ Recommended Pair ~) 420A Western Electric NOS 1979 (1.6/1.7ma and 1.6/1.6ma) "Pin It")