7643 Valvo branded Amperex PQ Germany "PINCHED WAIST" NOS 1960 (6BL8 sub)
By Tube World
$ 49.99
7643 Amperex Germany "PINCHED WAIST" NOS Gold Pins made by Valvo Hamburg Germany (BG2-D0J1=1960) date code on bottom of tube (Triode/Pentode)
triode) 11.5ma Gm=4600
pentode) 7.0ma Gm=5400
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
See more: vacuum tube
Share:
![Fancy](http://www.thefancy.com/fancyit?ItemURL=https://tubeworldexpress.com/products/copy-of-e80cf-7643-amperex-germany-pq-nos-1961-1966-p1-best-value&Title=7643 Valvo branded Amperex PQ Germany "PINCHED WAIST" NOS 1960 (6BL8 sub)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/7643pinch.jpg?v=1571438787){kind=link}
![](http://pinterest.com/pin/create/button/?url=https://tubeworldexpress.com/products/copy-of-e80cf-7643-amperex-germany-pq-nos-1961-1966-p1-best-value&media=http://tubeworldexpress.com/cdn/shop/products/7643pinch.jpg?v=1571438787&description=7643 Valvo branded Amperex PQ Germany "PINCHED WAIST" NOS 1960 (6BL8 sub) "Pin It")