E80CF Telefunken Germany <> bottom NOS Gold Pins rebranded Siemens 1970-1971 (6BL8 sub)
$ 49.99
1 tube) E80CF Telefunken <> bottom NOS Gold Pins rebranded Siemens 1970-1971
triode) 12.4ma Gm=4800
pentode) 7.6ma Gm=5400
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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