6688=E180F National UK black plate NOS probably made by Amperex (9ma)
By Tube World
$ 12.99
6688=E180F National UK black plate NOS probably made by Amperex
9ma
Gm=13,200
(10,000 hour 9-pin frame grid broadband Pentode, variant is 7737)
- Supratek Chenin, Cortese preamp
- Yamamoto 06-3 2010
See more: vacuum tube
Share:
&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_74dbddb7-eb60-4bd9-8f7b-0211d68a8faa.jpg?v=1708553558){kind=link}
 "Pin It")