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(!!!) (Best Pair #1) 448A Western Electric tipped top used/like new 1965-1966 (32.6ma and 31.8ma) (close Gm matching)
(!!!) (Best Pair #1) 448A Western Electric tipped top used/like new 1965-1966 (32.6ma and 31.8ma) (close Gm matching)
$ 119.99
1 pair) 448A WE "tipped top" used/tests like new D getter halo 1965-1966 reboxed
1 tube) 32.6ma Gm=28,700
1 tube) 31.8ma Gm=28,100
Amplitrex Test Data:
Vplate=135V
Vscreen=135V
Vgrid=-2
Good Ma range 20-30ma
Good Gm = 23,000 - 27,000
DIY pentode
See more: vacuum tube
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 (Best Pair #1) 448A Western Electric tipped top used/like new 1965-1966 (32.6ma and 31.8ma) (close Gm matching)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/448ap3.jpg?v=1571438787){kind=link}
 (Best Pair #1) 448A Western Electric tipped top used/like new 1965-1966 (32.6ma and 31.8ma) (close Gm matching) "Pin It")