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(!!!!!) (Recommended Pair) JAN-5691 Sylvania black plates NOS 1979 (1.9/1.9mA and 1.9/2.1mA) (Best 6SL7GT sub) (same internals as 5691 red base) 1-3% matched
(!!!!!) (Recommended Pair) JAN-5691 Sylvania black plates NOS 1979 (1.9/1.9mA and 1.9/2.1mA) (Best 6SL7GT sub) (same internals as 5691 red base) 1-3% matched
$ 189.99
1 low noise pair) JAN-5691 Sylvania black plates NOS 1979 1-3% matched
1 tube) 1.9/1.9mA and Gm=1400/1500
1 tube) 1.9/2.1mA and Gm=1400/1500
- very good detail
- low noise
- reference tube
NOS mA range 2.0mA+
NOS 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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 (Recommended Pair) JAN-5691 Sylvania black plates NOS 1979 (1.9/1.9mA and 1.9/2.1mA) (Best 6SL7GT sub) (same internals as 5691 red base) 1-3% matched&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_5c565265-5523-4094-929f-5c608435406c.jpg?v=1735452449){kind=link}
 (Recommended Pair) JAN-5691 Sylvania black plates NOS 1979 (1.9/1.9mA and 1.9/2.1mA) (Best 6SL7GT sub) (same internals as 5691 red base) 1-3% matched "Pin It")