(21 customer reviews)


Winged C 5U4GB Rectifier vacuum tube


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
Single Tube or Matched Set >

Matched Pair, Matched Quad, Single Tube

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

  1. Michael Newell (verified owner)

  2. Michael Newell (verified owner)

  3. Robert Parzych (verified owner)

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

  4. Scott M. (verified owner)

    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. (verified owner)

    Great tubes. Excellent transaction.

  6. Christopher M. (verified owner)

    Great NOS unit. Excellent service. Love Nesstone tubes!

  7. Ernesto J. (verified owner)

  8. Brendan M. (verified owner)

    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 (verified owner)

    knowledgeable and thorough service .and rocket sled shipping Ben

  10. Matt K. (verified owner)

    Good price and prompt shipping. Thank you!

  11. William Elliott (verified owner)

    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. (verified owner)

    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 (verified owner)

  15. Brian Frimpter (verified owner)

    Superb value great product

  16. John S. (verified owner)

    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 (verified owner)

    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!

  18. Steven (verified owner)


  19. Franco (verified owner)

    Great tubes/price!

  20. Jarrell Jarrett (verified owner)

    Super nice

  21. Herbert

    Beautiful tubes.

Add a review

Your email address will not be published. Required fields are marked *