Description
(!!!!!) (Best Pair) JAN-5691 Philips by Sylvania black plates NOS 1985 (2.3/2.6mA and 2.3/2.4mA) (Best 6SL7GT sub) (same internals as 5691 red base)
1 low noise pair) JAN-5691 Philips by Sylvania black plates NOS 1985 1-3% matched
1 tube) 2.3/2.6mA and Gm=1500/1600
1 tube) 2.3/2.4mA and Gm=1600/1600
– 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