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(!!!) (#1 6BLB SUB = E80CF=7643 Pair) E80CF=7643 Valvo branded Amperex Germany PQ NOS 1966 1% matched

(!!!) (#1 6BLB SUB = E80CF=7643 Pair) E80CF=7643 Valvo branded Amperex Germany PQ NOS 1966 1% matched

$ 59.99

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

1 tube) 13.6ma Gm=4800 and 9.8ma Gm=6000

1 tube) 13.8ma Gm=4900 and 9.6ma Gm=6200

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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