SKU: 28841626939

ECC83 12AX7 EI Yugoslavia Telefunken Long Smooth Plates 17mm Matched Pair NOS

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Description

ECC83 12AX7 EI Yugoslavia Telefunken Long Smooth Plates 17mm Matched Pair NOSCountry of Manufacture: Yugoslavia MPN: 12AX7ECC83 Brand: EI Type: Vacuum Tube Model: 12AX7 ECC83 Auction is for two (2) fully tested NOS tubes, platinum matched pair of rare ECC83 12AX7 EI made in Yugoslavia on geniuine Telefunken made tooling machines. Please pay attention that they DO NOT HAVE ANY PRINTS! They are real vintage NOS tubes in original boxes made back in late 80s early 90s in EI tube factory in Nis, Serbia. (Elektronska Industrija Nis)

Country of Manufacture: Yugoslavia

MPN: 12AX7ECC83

Brand: EI

Type: Vacuum Tube

Model: 12AX7 / ECC83

Auction is for two (2) fully tested NOS tubes, platinum matched pair of rare ECC83 12AX7 EI made in Yugoslavia on geniuine Telefunken made tooling machines. Please pay attention that they DO NOT HAVE ANY PRINTS!

They are real vintage NOS tubes in original boxes made back in late 80s - early 90s in EI tube factory in Nis, Serbia. (Elektronska Industrija Nis)

If you like sound of Telefunken's smooth plates ECC83 12AX7, you'll like these too, because they are (almost) exact copy. The only differences are in thickness of halo getter and in "staples" which are facing each other.

I have few 100 pcs boxes of these tubes and I had enough time last few months to carefully measure them on my Metrix and Tesla tube testers for plate currents and Hickok for transconductance and to make platinum matched pairs with balanced triode sections.

You can find them rebranded Telefunken, Philips and Siemens, because all three factories had contracts with EI. These are pre war tubes, with exceptional quality, made with 1st class materials, because of that many of them have been rebranded like long life premium versions E83CC and sold by Siemens and Philips in their boxes.

You can also find them relabeled Telefunken with diamond mark on the bottom last few years! Diamond bottom mark is done on laser machine, and if you want to avoid that and to be sure that you are buying genuine Telefunken ECC83 12AX7, just take a look at getter and how staples are faced. Diamond bottom is not proof any more ...



If you want to know more about Telefunken ECC83 12AX7 and different types of smooth plate and ribbed plate versions you should read this article on my site: www.tubes.rs/ecc83-telefunken-12ax7/


I collect tubes and tube gear for more then 35 years and I start to sell recently, please be sure to check my other items and visit my store for more rare NOS tubes and parts.

If you buy any item on ebay from me and for if you are not fully satisfied for any reason or have any complains, please send me message before leaving negative or neutral feedback or opening a case. I really do care about your satisfaction and I’ll do my best to solve any kind of problem.

I have more than 250000 NOS tubes in stock and just small part is listed here, if you are interested in any specific tube or part, please send me message.
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SKU: 28841626939

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Charles Echeverria
Cuba, US
★★★★★ 5
Perfect bag
Color: Apricot, Size: 16 Inch
Perfect bag! Is lightweight, good size, and beautiful, it has plenty of pockets, and easy to carry on your back or on your carry-on
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 3, 2025
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bernadette pernotto
Carnegie, US
★★★★★ 4
Doesn't Fit 16" Laptop
Color: C-apricot, Size: 14 Inch
My Dell laptop is 9" wide & 14" long. I can only zip up the back partially with my laptop in the backpack. I don't add anything else that is heavy because I'm fearful it will break. I wish it was bigger. I can fit my Apple laptop in it but it is smaller.
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Reviewed in the United States on August 4, 2025
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Ashley Driggers
Battle Creek, US
★★★★★ 5
Good Quality
Color: C-apricot, Size: 14 Inch
The quality of the backpack is very good. I like how it has a waterproof feeling fabric. I have used it for work and travel and it is excellent quality.
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Reviewed in the United States on February 12, 2026
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Tara S
Grantham, US
★★★★★ 5
Great Bag
Color: Black Brown, Size: 17.3 Inch
This backpack is awesome it holds way more than I anticipated and is super cute. The quality seems to be good to what I can tell.
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Reviewed in the United States on August 16, 2025
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Teri Haselhorst
Alexandria, US
★★★★★ 5
Classy!
Love this! Classy looking and nice quality. Received many compliments on our trip.
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Reviewed in the United States on September 10, 2025

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