(!!!!) (Best Value Like New Pair) 6550C Svetlana Russian low hours/like new 2011 (132ma and 136ma) (strong Gm) **

1 pair) 6550C Svetlana Russian low hours/like new condition 2011 good top getters 1 tube) 132ma Gm=11,100 1 tube) 136ma Gm=11,700 faded printing   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