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Svetlana SED "Winged C" EL34


Product Description

The best EL34 in existance?  I think so.  SED "Winged C" EL-34 - Formerly branded Svetlana. Having trouble finding the real deal that are first-quality? We've got 'em in stock now! Don't be fooled by some who are selling factory seconds, or trying to pass off counterfeits... these are first quality direct from the factory in Russia.  To my knowledge there is no other way to get them from a U.S. scource.  Lots of warmth, full bodied bass, and just ever so slightly relaxed on top.

Pricing above includes 72 hour burn-in, and matching in any quantity you need at no extra charge.

All power tubes are Platinum Screened & Tested to the highest standards, including a 72-hour burn in process, and testing at real-world voltages.

Product Videos

Upscale Audio review of the Svetlana SED Winged C EL34 02:20

Kevin Deal of Upscale Audio discusses the beautiful SED Winged C EL34.

  • Upscale Audio ...
    Kevin Deal of Upscale Audio discusses the beautiful SED Winged...

Warranty Information

Vacuum tubes are warranted for 90 days against defects, except in cases of abuse, and replaced with like-item only.

Vacuum tubes are warranted for 90 days against defects, except in cases of abuse, and replaced with like-item only.

  • Tubes being sent in for warranty must have a return authorization number from Upscale Audio. This RA number must be written on the outside of the box. Please also include a note in the box that has your name and telephone number, and please explain the issues with the tube. If this information is missing it will delay the shipment of your replacement tube.
  • Vacuum tubes being sent to Upscale Audio for warranty replacement must be shipped in a box with appropriate packaging to keep them from being damaged. Vacuum tubes returned to Upscale Audio using inadequate packing will have a voided warranty and will be refused at the customer's expense.

Exceptions to our warranty policy are as follows:

  • Upscale Audio reserves the right to refuse warranty at our disgretion based on the equipment being re-tubed. You will be notified of any change prior to your order being processed.
  • Using a tube in an application in which it was not meant to be used. If your amp calls for a 6550, and you decide you want to plug in a 6V6GT, Upscale Audio is not liable if the tube fails, and will not honor any warranty in such a situation.

Upscale Audio is not liable for any damage or injury caused by the improper use of its tubes or the use of an incorrect/incompatible tube type. If you are unsure of what tube or tubes your equipment uses, consult the manufacturer before making a purchase. Using an incompatible tube type may cause severe damage to your equipment and will void your tube's warranty.

vacuum tube returns for refund:

Vacuum tubes are electronic parts and are not refundable under any circumstances.

Other Details

Cryogenic Treatment:

Product Reviews

Write Review

  1. Extremely Happy!

    Posted by Theron Georges on 19th Dec 2014

    This is my second time purchasing tubes from Upscale. I will continue to return to purchase because of the outstanding customer service, selection, but especially because of the care that goes into burning in, testing and matching my tubes. I feel like my experiences with Upscale Audio have been white glove.

    As far as the SED Winged C's, I am extremely happy with my purchase. I have 4 of these installed in my hi-fi stereo amplifier. They were received in flawless condition. After I installed them, I biased them manually. Re-checked them a while later. Then was up and running.

    Put on a few of my favorite "reference" records and was amazed by the overall musicality of these tubes! I perceive a deeper soundstage and can definitely hear more detail than I did with my previous set of EL-34's from another company.

    If you are considering these tubes as an upgrade to your stereo system, but are hesitant to pull the trigger, I'd definitely recommend that you give them a listen. I doubt that you'll be disappointed.

    Thank you Upscale Audio for your kind attention to my emails and questions. You've definitely earned my business.

  2. Moved from the shugunag EL34 to the winged C

    Posted by Marv in Miwaukee WI on 7th Oct 2013

    Solid tube top to bottom, greater depth and articulation than other EL34's. Highly recommended thanks Kevin for the info on this one.

  3. better than stock from Marshall

    Posted by Danny Lawson on 21st Aug 2013

    had big outdoor venues 2 weekends straight . the winged c made my Marshall JVM 205c stand out in leads and just so clear on the clean rythms thank you up scale for nothing but the best

  4. Winger C's Trump References!

    Posted by Robert H. Levi, PFO on 20th Mar 2013

    I am unsure exactly what tube is supplied in my EAR 534, looks like EH EL-34's. They are branded by EAR. The Winged C's offer more, more, and more at all frequencies. Need another 50 hours to truly settle in but after that, WOW! No quibbles, just mellifluous music. Highly recommended!

  5. Beautiful sounding tubes!

    Posted by Kevin Torske on 30th Jun 2011

    Replaced a set of EH EL34''s in my Cary V12R monoblocks. All I can say is "WOW!" Absolutely gorgeous midrange, terrific tuneful bass, and shimmering highs. Very spacious soundstage. As mentioned, they are warmer sounding, but do not seem to blunt the detail to achieve the warmth. Wonferful!

  6. Huge upgrade!

    Posted by Rod Clark on 30th Jun 2011

    My speakers were a little bright with the KT88s, so Uncle Kevvy put my on to these. They''re a stunning upgrade to my Prologue 2. Very well balanced, detailed, warm but not too warm. Just right!!