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(!!!!) (Best Value Pair) E80CF=7643 Valvo branded Amperex Germany PQ NOS 1966 (12.2/12.6ma and  8.5/8.5ma) (6BL8 SUB)

(!!!!) (Best Value Pair) E80CF=7643 Valvo branded Amperex Germany PQ NOS 1966 (12.2/12.6ma and 8.5/8.5ma) (6BL8 SUB)

$ 74.99

1 matched pair) E80CF=7643 Amperex Germany PQ NOS made by Valvo Hamburg Germany 1966 in white boxes (Triode/Pentode)

1 tube) 12.2ma Gm=4800 and 8.5ma Gm=6000

1 tube) 12.6ma Gm=4700 and 8.5ma Gm=5900

 

Good Triode section Ma and Gm = 12-13ma Gm= 4500-5000

Good Pentode section Ma and Gm = 9-11ma Gm = 6000-6500

 

(The E80CF is a "SPECIAL QUALITY" medium-mu triode/pentode. Specs are similar to 6BL8=ECF80)

- McIntosh MR-67 tuner

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