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 /EL36 socket and PL36 glass envelope is used. Disc getter and three 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. I have two batches, one is year 1987 and another is 1988.


Perfectly matched quad, within 5%!

This is killer EL34 to any new production like JJ, Electro-Harmonix, Genalex-Gold Lion, Svetlana, Mullard, Shuguang, Tung-Sol, … EL34 6CA7 KT77.
They have been made in 80s, when EI factory has made million of tubes on monthly basis with strict quality control, tubes were printed depends on order, for many world famous tube brands like Siemens, Philips, Telefunken, RCA, Marshal, Jadis, Valvo, RTC, …


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10 thoughts on “EL34 EI Yugoslavia 6CA7

  1. Paolo De Marino

    Hello, i need of 4 EL34 “EI”. If available, please, let me know price, shipping cost for Italy ad payement method.
    Thanks
    Paolo De Marino

    Reply
  2. Fausto Feo

    Hello, I’m interested in a quartet EL34 EI.
    And pssibile know the price of the pipes and quato spend it for shipment.
    Sincerely Fausto

    Reply
  3. Gary Mattis

    Your comment is totally wrong ! , that is NOT the only version of a EL 34 tubes that was made by ; “Ei ” in Yugoslavia , , Ei made some flat top EL 34’s ! . I am not 100 % sure that Ei even made the pointy top ones in the picture actually ? ! , I think that Siemens may have made them for Ei because Ei had a huge failure rate of 50 to 60 % with their own flat top EL 34’s ? ! . The plates would actually glow bright orange and they would start to bias hot and distort after just a few minutes of use sometimes , I know first hand because I bought a NOS quad of them and one tube did just that exactly like they said it would ! . I used a RFT to replace it ! .
    Ei was part of Phillips (I think) by their tube boxes and their must have been either two Ei plants called ; Magnoval and Elecktronska Industrija or two sections at the same plant ? I am not a expert on Ei Yugoslavia by any means but I do know they sold 2 differant of El 34 tubes ! .

    Reply
  4. admin Post author

    Hello Garry and thanks for visiting http://www.tubes.rs and leaving a comment!

    EI definitely has made “pointy top” EL34 which you could see on photos above.

    On the photos 6 & 7, the third EL34 from the left, the second row of symbols, you can see EI factory code (circle, broken at the bottom, with a dot in the center), the year code (“9″ for the production year) 1989 and the month code. This is Philips tube code for Elektronska Industrija Nis tube plant (semicircle or horseshoe shape above dot)

    I’m from Serbia, ex Yugoslavia and I was born and live all my life 200 km far away from EI tube plant in Nis.

    I still remember the day when they have made this EL34 in the end of 80s, as young I have made many AM transmitters and I used a lot of EL34s in modulators, all of them were Philips / Mullard, RFT or Tesla. Suddenly one day EI started to make them and you could buy them in many EI shops everywhere in ex Yugoslavia. These are pre-war tubes with exceptional quality, and as I mentioned in page above, after that quality dropped so you needed to use personal connections to get good ones.

    About your comment that EI had two tube plants, Magnoval and Elektronska Industrija … Magnoval is type of socket, and as Philips used Miniwatt on some of their older tube boxes, EI used, Noval or Magnoval instead of Miniwatt. You can see here examples for Magnoval and Noval:

    PL504 EI Nis Srbija
    PL519 EI Yugoslavia 40KG6A
    PCC88 EI Yugoslavia from late 60s

    EI didn’t make so many octal tubes, so they have packed PL36 and EL34 in Magnoval boxes. Also later KT90, 300B and 400B thay have packed too in Magnoval boxes, despite all of those tubes were octal base.

    I’m pretty sure that your flat top EL34 actually is not made by EI, and I’d be glad if you’ll send me few photos to nostubes@gmail.com.

    Kind regards,

    Dragan

    Reply
  5. Tomislav

    Poštovanje,

    recite mi molim Vas koliko bi koštao par ovih 6CA7/EL34 cijevi te dvije ECC83 koje su se radile na Telefunken strojevima?

    Zanima me ukupna cijena sa poštarinom do Zagreba!

    Hvala i srdačan pozdrav,

    Tomislav

    Reply
  6. pierluigi

    Hello, i need of 4 EL34 “EI”. If available, please, let me know price, shipping cost for Italy ad payement method.
    Thanks
    Pierluigi

    Reply
  7. luigi

    Hi i am italian and i am interesting quad el 34 EI RC. Tall me the price with shipping cost from ItalY
    King regards
    Luigi

    Reply
  8. B. ALIMOEDDIN

    Hello, I need of 2 EL34 El , if available please ,let me know price , shipping cost for Indonesia adpayment method . Thanks Boy Alimoeddin

    Reply
  9. milan

    potrebne su mi 2 EL34 Ei lampe uparene. Kupio sam par 1994 direktno u Ei katodnim cevima i evo sada su mi stradale :)
    Koja je cena i kada su proizvedene.
    Pozdrav
    Milan

    Reply

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