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(!!!!!) (Best Overall Quad) JAN-7581A Philips by Sylvania Big Bottle NOS 1985 (76.5, 77.0, 77.5, 78ma) (matched quad)

$ 388.88

1 matched quad) JAN-7581A Philips by Sylvania Big Bottle NOS 1985 original boxes

1 tube) 76.5ma Gm=5900

1 tube) 77.0ma Gm=6150

1 tube) 77.5ma Gm=6000

1 tube) 78.0ma Gm=6150

 

Good Ma range 60-70ma

Good Gm range 5600-6000

Recommended for

- Ampeg VT22
- Fender Bassman 1969
- SunValley VP-3488SE
- Fender Vibrolux reverb 1971
- Fender Super Reverb 1970

 

See more: vacuum tube
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