6CS7 Tungsol NOS black plates 1960's (21/10ma) (internals like Sylvania)
$ 24.99
6CS7 Tungsol NOS black plates 1960's
21ma Gm=4400
10ma Gm=2200
Tested on Amplitrex
Good Ma triode #1 = 20-25ma Good Gm = 4000-4500
Good Ma triode #2 = 10-11ma, Good Gm = 2000-2200
for:
Leben CS 600 integrated amp
Leben CS 660P power amp
See more: vacuum tube
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