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(!!!!) (Best Pair 1965) 5691 RCA Red Base Black Plates NOS branded GE 1965 (2.5/2.5ma and 2.3/2.5ma) (Same Gm for both tubes)

(!!!!) (Best Pair 1965) 5691 RCA Red Base Black Plates NOS branded GE 1965 (2.5/2.5ma and 2.3/2.5ma) (Same Gm for both tubes)

$ 299.99

1 Matched Pair NOS) 5691 RCA Red Base Black Plates NOS branded GE 1965

1 tube) 2.5/2.5ma Gm=1600/1600 (KU) 1965

1 tube) 2.3/2.5ma Gm=1600/1600 (LU) 1965

 

Good Current Range = 2-3ma

Good Gm range 1500-1600

 

  • Matched on AMPLITREX and in tested in headphone amp for noise
  • Low Noise and not microphonic
  • best 6SL7GT sub
  • very smooth sound, low noise

Recommended for

- Ampeg Heritage B-15
- Alessandro Itallian Greyhound jazz amp
- Alessandro Black and Tan 2005
- Almarro A318B
- Eddie Current

 

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