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(!!!!) (Best Pair) 5691 RCA red base branded Sylvania and GE black plates NOS 1960-1965 (2.3/2.3ma and 2.2/2.4ma) 1-2% matched
(!!!!) (Best Pair) 5691 RCA red base branded Sylvania and GE black plates NOS 1960-1965 (2.3/2.3ma and 2.2/2.4ma) 1-2% matched
$ 299.99
1 low noise tube) 5691 RCA red base NOS 191965 same build
1 tube) 2.3/2.3ma Gm=1500/1600 branded Sylvania
1 tube) 2.2/2.4ma Gm=1500/1500 branded GE
- best sounding 6SL7GT sub
- very smooth, balanced, low noise
Good Current Range = 2-3ma
Good Gm range 1400-1600
Recommended for
- Line Magnetic LM-508IA
- 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 Pair) 5691 RCA red base branded Sylvania and GE black plates NOS 1960-1965 (2.3/2.3ma and 2.2/2.4ma) 1-2% matched&Category=vacuum tube&ImageURL=http://cdn.shopify.com/s/files/1/0333/7633/products/1_dbdfcaae-e11d-4a11-9c8f-d2a40bb3981b.jpg?v=1596296384){kind=link}
 (Best Pair) 5691 RCA red base branded Sylvania and GE black plates NOS 1960-1965 (2.3/2.3ma and 2.2/2.4ma) 1-2% matched "Pin It")