Rated 4.92 out of 5 based on 13 customer ratings
(14 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

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

  1. Rated 5 out of 5

    Michael Newell

  2. Rated 5 out of 5

    Michael Newell

  3. Rated 5 out of 5

    Robert Parzych

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

  4. Rated 5 out of 5

    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. Rated 5 out of 5

    Christopher M.

    Great tubes. Excellent transaction.

  6. Rated 5 out of 5

    Christopher M.

    Great NOS unit. Excellent service. Love Nesstone tubes!

  7. Rated 5 out of 5

    Ernesto J.

  8. Rated 5 out of 5

    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. Rated 5 out of 5

    Ben Fanney

    knowledgeable and thorough service .and rocket sled shipping Ben

  10. Rated 5 out of 5

    Matt K.

    Good price and prompt shipping. Thank you!

  11. Rated 5 out of 5

    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. Rated 4 out of 5

    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. Rated 5 out of 5

    dave hertzberg

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