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(!!!) (BEST PAIR) 6DN7 GE branded Tungsol and RCA NOS black plate/gray plate 1960 era (40ma and 8.5ma and 40ma 7.7ma)
(!!!) (BEST PAIR) 6DN7 GE branded Tungsol and RCA NOS black plate/gray plate 1960 era (40ma and 8.5ma and 40ma 7.7ma)
By Tube World
$ 39.99
1 pair) 6DN7 GE branded Tungsol and RCA NOS black plate/gray plate 1960 era same build
1 tube) 40ma Gm=7800 and 8.5ma Gm=2500 branded Tungsol 1960 era
1 tube) 40ma Gm=7700 and 8.5ma Gm=2300 branded RCA (LU) 1960
Tested on Amplitrex
1 section) Good NOS Ma=35-40ma and Gm=7000-7700
1 section) Good NOS Ma=8ma and Gm=2500
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See more: vacuum tube
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 (BEST PAIR) 6DN7 GE branded Tungsol and RCA NOS black plate/gray plate 1960 era (40ma and 8.5ma and 40ma 7.7ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_6bc64b31-082b-4cdd-9a6f-f0712d0c63c3.jpg?v=1696305266){kind=link}
 (BEST PAIR) 6DN7 GE branded Tungsol and RCA NOS black plate/gray plate 1960 era (40ma and 8.5ma and 40ma 7.7ma) "Pin It")