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(!!!!) (Best 7581A Quad) JAN-7581A Philips by Sylvania Big Bottle NOS 1985 (70, 70, 71, 72.5ma) (matched quad)

$ 389.99

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

1 tube) 70ma Gm=5550

1 tube) 70ma Gm=5500

1 tube) 71ma Gm=5500

1 tube) 72.5ma Gm=5750

 

Good Ma range 60-70ma

Good Gm range 5500-6000

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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