(!!!!) (Used Pair) 6550C 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
1 tube) 150.0ma Gm=11,350
1 tube) 152.5ma Gm=11,550
Good NOS mA range 130-150mA
Sweet spot is 140mA
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See more: vacuum tube
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 (Used Pair) 6550C Svetlana Russian used/good 2000-2001 (150ma and 152.5ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/8_96cb3850-f08d-4e6d-958f-684e757d9ad7.jpg?v=1700610724){kind=link}
 (Used Pair) 6550C Svetlana Russian used/good 2000-2001 (150ma and 152.5ma) "Pin It")