General Electric 5751 Triple Mica Black Plates

General Electric 5751 TMBP 1950's USA
One of the best sounding 5751's ever made. Very well balanced tube with smooth highs, sweet midrange and good bass. Print quality varies. Some tubes in stock are labeled and boxed for National Electronics, Heintz & Kaufman etc. The others will come in white boxes.

Quantity in Stock : Out of Stock!
Price : Grade A @ US$69,00/each ; US$142,00/matched pair
          Grade B @ US$59,00/each ; US$122,00/matched pair
          Grade C @ US$29,00/each ; US$62,00/matched pair

Grade A - The best in the stock. Lowest noise and microphony with the tightest balanced sections we have available. This is typically 10% or often tighter given the large volumes of our stock.
Grade B - Low noise and microphonics with a section balance typically between 15% and 20%, but may be higher depending on available stock.
Grade C - Lowest noise but slightly microphonic. Section balance will be similar to Grade A or B. This grade is only suitable for use in the driver stage of an amplifier, or the output/buffer stage of a DAC or CD Player.


  1. I got these famous tubes as a matched pair with very nice NATIONAL printing and boxes. I tried them on Kondo japan M7 phono stage together with one pair early 1950 RCA 6189 TMBP also from NOS TUBE STORE , in place of much more expensive TFK ECC83 long plates and AMPEREX ECC186/7316/ECC82 short plates and I liked better this combination , by getting more musicality , richness,liquidity and bass slam , on the downsides i loose little bit transparency and air ( in this area nothing come close to TFK and DUTCH AMPEREXES) , but overall i enjoy more records than before and especially the old recordings. In short excellent and very rare tubes and very highly recommended.
    Alki Papadas, Athens - Greece

  2. Great sounding, classic tube. Sounds great coupled with vintage vinyl and remastered CD's from the 1960's & 70's. Balanced frequency response. Good imaging. Not particularly colored but had a great flavor all it's own...which is very musical and works well for many musical types. A classic example of the US-made black plate 5751. Requires a healthy burn in time to show it's true colors!

    Garth from New York

  3. I bought a matched pair of General Electric 5751 Triple Mica Black Plates by recommendation from Koray, and I have to say that I really like these tubes. Refined and airy sound but with good midrange. Lovely voices.
    Had some questions and Koray resolved fast and effective.

    Carles from Cerdanyola

  4. Great sounding tubes that sound better every day as they are stil in the burn in process.
    Thanks again

  5. Yes, this tube is a fantastic sounding matter. Put one in your favourite sound system and it will make it much better instantly.

    Koray is a fantastic assistant so if you have dudes he always is here.


  6. Right out of the box, great sound on my PrimaLuna Dialogue One together with RCA 12AU7 1959 Clear Tops. Can't wait to hear how burn-in will improve and refine sound even more. Thank you Sir Koray.

  7. This is my favorite 5751 type. It has awesome extension and warmth. I bought two they are both very quiet. I am bummed they are out of stock now.


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