(!!!!) (Used Pair) 6550C Svetlana Russian used/good 2000-2003 (141ma and 141.2ma)
By Tube World
$ 89.99
1 pair) 6550C Svetlana Russian used/good 2000-2003 in white boxes
1 tube) 141.2ma Gm=11,300 (2000)
1 tube) 141.0ma Gm=11,050 (2003)
Good NOS mA range 130-150mA
Sweet spot is 140mA
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