Preamp Tubes

Preamp tubes take the small signal from your pickup and amplify it to "line level." As the signal passes through, preamp tubes influence the various EQ stages found in your amp, such as distortion, gain boost, tremolo and reverb.  In most amp circuits, it is common for each stage to be controlled by one preamp tube.  Therefore, preamp tubes will impact your tone more than any other tube change in your amp, especially in the V1 slot (closest to your input jack).

Additional options for your preamp tubes when needed:

Balanced:  When the plate current draw of each triode is the same, we refer to that as having balanced triodes. 

High Gain:  Tubes that measured to have higher gain.

Matched:  Each triode of the preamp tube has matching gain.


  • Sovtek 12AX7WC

    Sovtek 12AX7 WC

    Rugged, durable, quiet. Strong output, a budget tube.

  • Sovtek 12AX7WB

    Sovtek 12AX7 WB

    Stock for major amp makers. Best for those on a budget.

  • Sovtek 12AX7WA

    Sovtek 12AX7 WA
    OEM for major amp makers. Best for those on a budget.
  • Ruby 7025SS HG

    Ruby 7025SS HG
    Ruby 7025SS HG "Silver Special". Limited supply available for these out of production Shuguang tubes.
  • Ruby 12AX7WBC HG

    Ruby 12AX7WBC HG
  • Ruby 12AX7ACZ HG

    Ruby 12AX7 ACZ High Grade
    Highest gain 12AX7, great for metal and hard rock. Selected high grade JJ ECC83.

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