EL34 EI Yugoslavia (6CA7)
New in original boxes, the only version of EL34 that EI factory ever made. 6CA7 was also made in Nis, Serbia but in bigger glass envelope of PL509/PL519 tubes. For this EL34, PL36 socket and PL36 glass envelope is used. Disc getter and thre holes in plates. A lot of these tubes were very problematic, more than 60% of regular production was under dissipation ratings, but some rare examples, carefully tested are great, sonicaly and by dissipation.
