(!!!) (Best Pair) 99=X99 Ken Rad NOS 1940's (2.5ma and 2.6ma)
By Tube World
$ 129.99
1 pair) 99=X99 Ken Rad NOS 1940's original boxes
1 tube) 2.5ma and Gm=500
1 tube) 2.6ma and Gm=500
Vplate=90V
Vgrid=-4.5V
NOS mA 2mA+
NOS Gm 300-400
(UV-99 and UX-99 have a 3.3V @ .063ma Filament, UV base has smaller size pins)
See more: vacuum tube
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 (Best Pair) 99=X99 Ken Rad NOS 1940's (2.5ma and 2.6ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_b5bcc780-ff6c-41e5-8d2a-2fd56e7b184a.jpg?v=1683593467){kind=link}
 (Best Pair) 99=X99 Ken Rad NOS 1940's (2.5ma and 2.6ma) "Pin It")