(!!!) (Best Pair) 404A Western Electric used/good 1963 (27ma and 30.5ma)
$ 59.99
1 matched pair) 404A Western Electric used/good (6339=1963)
1 tube) 27.0ma Gm=16,500
1 tube) 30.5ma Gm=18,500
Tested on Amplitrex
Vplate=150V
Vscreen=150V
Vgrid=-1.5V
Good like new Ma range 18-20ma
Good used Gm range 12,000 - 13,000
See more: vacuum tube
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 (Best Pair) 404A Western Electric used/good 1963 (27ma and 30.5ma)&Category=vacuum tube&ImageURL=http://cdn.shopify.com/s/files/1/0333/7633/products/404ap1_5e01808c-d76f-4a01-a3b1-16553db17d10.jpg?v=1571439011){kind=link}
 (Best Pair) 404A Western Electric used/good 1963 (27ma and 30.5ma) "Pin It")