(!!!) (Best Pair) 420A Western Electric NOS 1979 (1.6/1.9ma and 1.6/1.9ma)
By Tube World
$ 139.99
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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 (Best Pair) 420A Western Electric NOS 1979 (1.6/1.9ma and 1.6/1.9ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/420ap11_d28bdc0a-5bb2-4a40-b621-770f360d126f.jpg?v=1571439300){kind=link}
 (Best Pair) 420A Western Electric NOS 1979 (1.6/1.9ma and 1.6/1.9ma) "Pin It")