E80CF=7643 Valvo Germany branded Philips 1970 (10.5/14.2ma)

E80CF=7643 Valvo Germany branded Philips 1970 (Triode/Pentode)

triode) 10.5ma Gm=4500

pentode) 14.2ma Gm=6800

Good Triode section Ma and Gm = 10-13ma 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