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(!!!) (Best Pair #3) 56 Sylvania black plate NOS 1940's branded Western Electronics 1946 slightly tilted glass (5.5ma and 5.6ma) (same Gm)
(!!!) (Best Pair #3) 56 Sylvania black plate NOS 1940's branded Western Electronics 1946 slightly tilted glass (5.5ma and 5.6ma) (same Gm)
$ 29.99
1 pair) 56 Sylvania black plate NOS 1940's branded Western Electronics 1940's original boxes, 4 metal prongs on top mica, same internals - slightly tilted glass
1 tube) 5.5ma Gm=1500
1 tube) 5.6ma Gm=1500
(Vfilament = 2.5 volts)
Amplitrex Test:
Vplate=250V
Vgrid=-13.5V
Iplate good range = 4.5-5.5ma
Gm=1400
- Inspire LP-27A
See more: vacuum tube
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 (Best Pair #3) 56 Sylvania black plate NOS 1940's branded Western Electronics 1946 slightly tilted glass (5.5ma and 5.6ma) (same Gm) "Pin It")