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(!!!!!) (Best Value Pair) JAN-5691 Philips by Sylvania black plates NOS 1984 (2.0/2.1mA and 2.1/2.1mA) (Best 6SL7GT sub) (same internals as 5691 red base) 1-2% matched
(!!!!!) (Best Value Pair) JAN-5691 Philips by Sylvania black plates NOS 1984 (2.0/2.1mA and 2.1/2.1mA) (Best 6SL7GT sub) (same internals as 5691 red base) 1-2% matched
$ 209.99
1 low noise pair) JAN-5691 Philips by Sylvania black plates NOS 1984 1-2% matched
1 tube) 2.0/2.1mA and Gm=1500/1500
1 tube) 2.1/2.1mA 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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 (Best Value Pair) JAN-5691 Philips by Sylvania black plates NOS 1984 (2.0/2.1mA and 2.1/2.1mA) (Best 6SL7GT sub) (same internals as 5691 red base) 1-2% matched&Category=vacuum tube&ImageURL=http://cdn.shopify.com/s/files/1/0333/7633/products/1_4e79a469-9f2e-434f-85e3-5d71961c2caa.jpg?v=1638727913){kind=link}
 (Best Value Pair) JAN-5691 Philips by Sylvania black plates NOS 1984 (2.0/2.1mA and 2.1/2.1mA) (Best 6SL7GT sub) (same internals as 5691 red base) 1-2% matched "Pin It")