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(!!!!) (Used Pair) 6550C Winged C by Svetlana and Svetlana Russian used/good 2000-2001 (150ma and 152.5ma)
(!!!!) (Used Pair) 6550C Winged C by Svetlana and Svetlana Russian used/good 2000-2001 (150ma and 152.5ma)
By Tube World
$ 79.99
1 pair) 6550C Svetlana Russian used/good 2000-2001 faded top getters - same build
1 tube) 150.0ma Gm=11,350 branded Svetlana 2000 - on right
1 tube) 152.5ma Gm=11,550 Winged C by Svetlana 2001
Good NOS mA range 130-150mA
Sweet spot is 140mA
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