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(!!) (#3 6CS7 Pair) 6CS7 Sylvania black plates NOS same build - one tube has small white mica flake inside tube (P6)

(!!) (#3 6CS7 Pair) 6CS7 Sylvania black plates NOS same build - one tube has small white mica flake inside tube (P6)

$ 33.99

1 matched pair) 6CS7 Sylvania black plates NOS 1960's same build (P6)

1 tube) 25ma Gm=4700 and 12.2ma Gm=2300 small mica flake at bottom of tube

1 tube) 29ma Gm=4700 and 11.2ma Gm=2200

 

Matched on Amplitrex

Good Ma triode #1 = 20-25ma, Good Gm = 4000-5000

Good Ma triode #2 = 10-12ma Good Gm = 2000-2400 

for:

Leben CS 600 integrated amp
Leben CS 660P power amp

See more: vacuum tube
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