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(!!!!!) (Best Overall Single) JAN-5691 Sylvania black plates NOS 1977 (2.8/3.1mA) (Same Gm) (Best 6SL7GT sub) (same internals as 5691 red base)
(!!!!!) (Best Overall Single) JAN-5691 Sylvania black plates NOS 1977 (2.8/3.1mA) (Same Gm) (Best 6SL7GT sub) (same internals as 5691 red base)
$ 139.99
1 low noise tube) JAN-5691 Sylvania black plates NOS 1977
2.8mA Gm=1800
3.1mA Gm=1800
- very good detail
- low noise
- reference tube
Good mA range 2.0mA+
Good Gm range 1500+
Recommended for
- Ampeg Heritage B-15
- Alessandro Itallian Greyhound jazz amp
- Alessandro Black and Tan 2005
- Almarro A318B
- Eddie Current
See more: vacuum tube
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 (Best Overall Single) JAN-5691 Sylvania black plates NOS 1977 (2.8/3.1mA) (Same Gm) (Best 6SL7GT sub) (same internals as 5691 red base)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_2c155365-ad3a-4049-ae97-88add20d3b62.jpg?v=1696366821){kind=link}
 (Best Overall Single) JAN-5691 Sylvania black plates NOS 1977 (2.8/3.1mA) (Same Gm) (Best 6SL7GT sub) (same internals as 5691 red base) "Pin It")