Mullard CV4004 / 12AX7 New Production Preamp Vacuum Tube

$
27
.95
Price is for a single tube with standard testing.

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MU-CV4004
Mullard CV4004 / 12AX7 New Production Preamp Vacuum Tube
  • Mullard CV4004 / 12AX7 New Production Preamp Vacuum Tube
  • Mullard CV4004 / 12AX7 New Production Preamp Vacuum Tube

The new production Mullard CV4004 / 12AX7 is a high gain, low noise 12AX7 variant with a short plate structure for reduced microphonics excellent for use in high gain Marshall pre-amplifier circuits or any combo amp where noise and microphonics can be a problem.




  • I used these in a JTM45 in V1 and V2, very nice sounding pre amp tubes, lots of growl.

    reviewed by: Rocky Singleton

  • This is my favorite new production tube! I’m running this in my Silverface Champ and it’s the closest to the JAN tube that was in it when I bought it.

    reviewed by: Nick

  • I play through a Hughes & Kettner Triamp MK II. I use JJ tubes typically. I was looking for a warm and clear tube for my dirty clean channel and this tube did that. It's warm, crisp and clear. It will not add high-end brittleness. It's incredibly quiet and I use this tube in the V1 position and it adds a nice warm crisp tone to the amp. This is one of those tubes that you can't really go wrong with.

    reviewed by: Matthew Magoon

  • Tube neophyte, so reader beware. I recently entered the world of tubes with a Yaqin MS-12B preamp for my Rega P2 stock TT. After spending 20 hours listening to the stock Chinese tubes, I put the Mullards Ax7 and Au7’s in. The sound improvement was very noticeable. The mullards offerred a much more detailed sound. Crimson & Clover sounded flat until I put in the mullards to fully appreciate the song on my modest system.

    reviewed by: 11g

  • I used it for my El84 amp and very happy with the sound

    reviewed by: Medizai

  • I have tried this Mullard as well as the NOS CV4004. These tubes are more laid back than the Electro Harmonix. I prefer the sound of the Tung Sol because they are more vivid and have less detail retrieval in the treble region. But many people do favor these tubes.

    reviewed by: Michael Emery

  • Good sound and good price! very happy.

    reviewed by: Medizai

  • Fantastic preamp gain & PI tubes. I use these in 18W, 20W and 36W cathodyne and long tail pair builds and they sound great.

    reviewed by: Craig French