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(!!!!!) (Best Tungsol Pair) 6550 Tungsol USA branded GE gray plates with vent holes 1968-1969 in white boxes (135.5ma and 135.8ma) (close Ma and Gm)

(!!!!!) (Best Tungsol Pair) 6550 Tungsol USA branded GE gray plates with vent holes 1968-1969 in white boxes (135.5ma and 135.8ma) (close Ma and Gm)

$ 699.99

1 matched pair) 6550 Tungsol USA branded GE gray plates with vent holes 1968-1969 in white boxes, three (3) large shiney getters on each tube

1 tube) 135.5ma Gm=10,950 (KZ) 1969

1 tube) 135.8ma Gm=11,050 (NY) 1968

  

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
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