Log-in
(!!!!) (Best Tungsol Single) 6550 Tungsol USA NOS branded Sylvania gray smooth plate 1960 era (142.5ma) (Audio Research, Tavish power supply)

(!!!!) (Best Tungsol Single) 6550 Tungsol USA NOS branded Sylvania gray smooth plate 1960 era (142.5ma) (Audio Research, Tavish power supply)

$ 259.99

1 tube) 6550 Tungsol USA NOS gray smooth plate 1960 era, 3 large shiney getters

142.5ma

Gm=11,750

 

Good NOS Ma range 125-140ma

Good NOS Gm range = 10,000 - 11,000 

 

Recommended for

- 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
Scroll to top