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(!!!) (Best Pair 1946) 56 Sylvania black plate NOS 1946 (5.4ma and 5.7ma) (same Gm)
(!!!) (Best Pair 1946) 56 Sylvania black plate NOS 1946 (5.4ma and 5.7ma) (same Gm)
By Tube World
$ 31.99
1 pair) 56 Sylvania black plate NOS 1946
1 tube) 5.4ma Gm=1500
1 tube) 5.7ma Gm=1500
Matched on Amplitrex
Vplate=250V
Vgrid=-13.5V
Good Ma range = 4.5 - 5ma
Good Gm range = 1300-1400
(76=Type 56 with a 6.3V Filament and also is similar to type 37)
UX-5 pin socket
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