New in original boxes, gold pins, diamond bottom!
These tubes were made in 60s when gold pins really meant quality. Today a lot of cheap tubes are gold pins and they are sold like premium versions – now it’s just marketing ploy. These are super-premium version of 6922 tube, with guaranteed matching between the two triodes and also, other characteristics are specially tested for and controlled. Very dimensional and musical tube, with smooth, balanced and realistic highs. Lots of air and depth, great imaging!!! Geniuine Telefunken tube with diamond bottom <>. The best E88CC 6DJ8 6922 ECC88 I’ve ever tried.
Diamond bottom <>
Same codes on 6922 tubes
E88CC (ECC88, 6DJ8, 6922, 7308) Telefunken tube, all same code U3218104
Telefunken code explanation (post 1968 tubes) U3218104 code
U = Ulm tube plant, West Germany U3218104
Day 32=> 23 (reverse first and second digit) U3218104
Month 11 => November (third and fifth digit) U3218104
Year => 1968 (Last digit of year, fourth digit) U3218104
These E88CC Telefunken were made on 23.11.1968 in Ulm plant in West Germany
Hello Dragan and thanks for your recommendation. These Tele’s sound fantastic in my AUDION PREMIER QUATTRO LINE Q4. I have tried 6N23 and few different current production 6DJ8 / 6922, but now I can understand all the fame about Telefunken diamond bottoms!!!