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(!!!!!) (RecommendedPair) JAN-5691 Philips by Sylvania black plates NOS 1984-1985 (2.0/2.2mA and 2.1/2.4mA) (Best 6SL7GT sub) (same internals as 5691 red base) 1-3% matched
(!!!!!) (RecommendedPair) JAN-5691 Philips by Sylvania black plates NOS 1984-1985 (2.0/2.2mA and 2.1/2.4mA) (Best 6SL7GT sub) (same internals as 5691 red base) 1-3% matched
By Tube World
$ 219.99
1 low noise pair) JAN-5691 Philips by Sylvania black plates NOS 1984-1985 1-3% matched
1 tube) 2.0/2.2mA and Gm=1400/1700
1 tube) 2.1/2.4mA and Gm=1500/1600
- 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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 (RecommendedPair) JAN-5691 Philips by Sylvania black plates NOS 1984-1985 (2.0/2.2mA and 2.1/2.4mA) (Best 6SL7GT sub) (same internals as 5691 red base) 1-3% matched&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/2_bcab96f4-4b59-432e-9734-54b62dcc297f.jpg?v=1684164461){kind=link}
 (RecommendedPair) JAN-5691 Philips by Sylvania black plates NOS 1984-1985 (2.0/2.2mA and 2.1/2.4mA) (Best 6SL7GT sub) (same internals as 5691 red base) 1-3% matched "Pin It")