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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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★★★★★ 5
This is a great surge protector and has plenty of outlets. Highly Recommend
Size: 6.5 FT, Color: Black
I attached this to the back of my nightstand. I have multiple devices in the nightstand and on top of it. This is a fantastic unit and I love it. Works Fantastic. I highly recommend.
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Reviewed in the United States on December 23, 2025
★★★★★ 5
Works as expected
Size: 6.5 FT, Color: Black
Great power expander with surge protection
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Reviewed in the United States on January 4, 2026
★★★★★ 5
The Ultimate Command Center for My Workbench
Size: 6.5 FT, Color: Black
I finally ditched the old, flimsy power strip on my workbench and mounted this DEPOW 28-in-1 Surge Protector on the wall behind it. Honestly? It was the best move I’ve made for my workspace in years.
Here is why this thing is a beast for anyone with a hobby or work bench:
Insane Outlet Capacity: With 22 AC outlets, I no longer have to play "musical chairs" with my power tools. I can keep my chargers and bench tools plugged in simultaneously without running out of room.
The Modern Tech Solution: It feels like every new gadget uses USB-A or USB-C these days. Having 6 dedicated USB ports (including 3 USB-C) built right in means I can charge my phone, tablets, and lights without using up my precious AC space with bulky "bricks."
Pro Mounting & Design: Mounting it on the wall cleared up so much clutter on the bench surface. The 6.5ft flat plug cord made it easy to reach the wall outlet even with the bench pushed flush against it.
Peace of Mind: With 2100 Joules of surge protection, I don’t have to worry about my expensive electronics or power tools getting fried during a storm.
The Bottom Line: This isn't just an extension cord; it’s a full-on power hub. If you have a mix of high-power tools and modern USB-charged gear, "this baby" truly does it all. Highly recommended for gamers, DIYers, or anyone with a home office!
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Reviewed in the United States on April 6, 2026
★★★★★ 4
SO far so good, no issues yet
Size: 6.5 FT, Color: Black
Hate it's made out of cheap hardened plastic
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Reviewed in the United States on May 7, 2026
★★★★★ 5
Fantastic power strip with tons of outlets!
Size: 6.5 FT, Color: Black
This surge protector power strip is amazing! With 22 AC outlets and 6 USB ports including USB-C, it's incredibly versatile for all my devices. The flat plug makes it easy to fit behind furniture and the 6.5-foot cord gives plenty of reach. The 1875W capacity handles everything with ease!
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Reviewed in the United States on March 27, 2026