12AX7 / ECC83 / 7025

The 12AX7 is by far the most common out of all preamp tubes. Also known as the ECC83 or the 7025, it is a dual triode tube that has the highest voltage gain of all preamp tubes, with a mu of 100. Widely used across guitar amplifiers and hi-fi applications.

For less gain, you can replace a 12AX7 with 5751, 12AT7, or a 12AY7

 


 

  • Ruby 12AX7ACZ HG

    Ruby 12AX7 ACZ High Grade
    $21.95
    Highest gain 12AX7, great for metal and hard rock. Selected high grade JJ ECC83.
  • Ruby 12AX7ACZ HG+

    /
    $25.95
    Highest gain 12AX7, great for metal and hard rock. Selected highest grade JJ ECC83.
  • Sovtek 12AX7WA

    Sovtek 12AX7 WA
    $23.95
    OEM for major amp makers.

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