Home » (!!!!) (Best Value Used Pair) 6550C Svetlana Russian used/good 2000-2001 faded printing (137.5ma and 140ma)

(!!!!) (Best Value Used Pair) 6550C Svetlana Russian used/good 2000-2001 faded printing (137.5ma and 140ma)

By Tube World

$ 79.99

1 pair) 6550C Svetlana Russian used/good 2000-2001 faded printing in white boxes

1 tube) 137.5ma Gm=10,500 (2000)

1 tube) 140.0ma Gm=10,850 no printing 2000-2001 era

Good NOS mA range 130-150mA

Sweet spot is 140mA

- ARC VS 110 and other ARC amps
- Audio Research Reference 3 line-stage power supply
- Rogue 90
- VTL amps; MB300, 450, many others
- Gibson guitar amp
- McIntosh 275
- Beard P100 MKII 1984
- Cayin A-88T

See more: vacuum tube