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(!!!!!) (Best Single) 6550 Tungsol USA NOS branded GE gray smooth plate 1962 (133ma) (Recommended for Audio Research power supply)

(!!!!!) (Best Single) 6550 Tungsol USA NOS branded GE gray smooth plate 1962 (133ma) (Recommended for Audio Research power supply)

$ 379.99

6550 Tungsol USA NOS branded GE gray smooth plate 1962

133ma

Gm=10,300

 

Good NOS Ma range 120-140ma

Good NOS Gm range = 10,000 - 12,000 

 

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

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