(17 customer reviews)


SED Winged C 5U4GB Rectifier vacuum tube


SED SVETLANA Winged C 5U3C. This is equivalent to the 5U4GB. Getting harder to find – Stock up now before they are HISTORY

The finest newer production rectifier tube anywhere. No longer made and soon will be gone forever.

Tested on the RoeTest professional computer testing system.


Additional information

Weight 4 oz
Dimensions 4.5 × 2 × 2 in
Matched Sets

Single Tube, Matched Pair, Matched Quad

17 reviews for SED 5U4 / 5U3C / 5U4GB / 5C3S / 5AS4A Winged C Premium Rectifier Tube

  1. Michael Newell

  2. Michael Newell

  3. Robert Parzych

    I haven`t used any of the tubes I purchased yet. They look good though

  4. Scott M.

    These 5u4’s are very high quality. They work great and look great in my upgraded Heathkit W-4AM amplifiers. I purchased extras to use in other amplifiers, as well. I received the 5u4’s very quickly, as always.

  5. Christopher M.

    Great tubes. Excellent transaction.

  6. Christopher M.

    Great NOS unit. Excellent service. Love Nesstone tubes!

  7. Ernesto J.

  8. Brendan M.

    Bought a pair of these tubes and liked them so much I ordered another to see me through the rest of my days! They are much, much better than the price would suggest. Super fast shipping was a nice touch too. I’ll be back…

  9. Ben Fanney

    knowledgeable and thorough service .and rocket sled shipping Ben

  10. Matt K.

    Good price and prompt shipping. Thank you!

  11. William Elliott

    Great service, fast shipping, super price on quality tubes. Thanks

  12. Paulo Wilson rosario

    I bought pair of eh tubes by Ness ,ibecame customer. Fair prices and honest.

  13. Robert S.

    Haven’t fully burned them in yet, but they certainly function as expected. First impressions- the seem to add more low end capability. And they just look really cool!

  14. dave hertzberg

  15. Brian Frimpter

    Superb value great product

  16. John S.

    I like these Winged C rectifier tubes and use them in several stereo amps. I own several other brands. These are a great value and my “go to” first choice

  17. Christopher

    Fast delivery, and a repeat purchase. Nice to have these great and well priced 5U4Gs in reserve for my awesome Nobsound MS 50-D. Plus they are very cool looking when lit up! Performance art!

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