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

 


 

  • Penta 12AX7

    Penta 12AX7
    $13.95
    Warm, fat tone. We are now shipping 12AX7AC5 HG's in place of Penta's.

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