12AX7/ECC83

The 12AX7 is a high gain dual triode used in guitar amplifiers and hi-fi circuits. It is a 9 pin noval tube with two heaters that can be operated in parallel at 6.3V or series at 12.6V. First developed in 1947, it is now the most commonly used tube in the world. The 12AX7 is often used for guitar input circuits, phase inverters in high gain amplifiers, reverb recovery circuits, microphone preamps and direct boxes.

Equivalents to the 12AX7 include ECC83, ECC803 and 7025.
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    Tung Sol Preamp Vacuum Tube, 12AX7 SKU#: T-TNG-12AX7
    $16.95
    Out of stock
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    Tube Amp Doctor Premium Selected Preamp Tube, 7025WA SKU#: T-TAD-7025WA
    $22.50
    Out of stock
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    Tube Amp Doctor Premium Selected Preamp Tube, 12AX7A-C SKU#: T-TAD-12AX7
    $17.50
    Out of stock
  4. Rating:
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    Sovtek Preamp Vacuum Tube, 5751 SKU#: T-SOV-5751
    $16.80
    Out of stock
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    Sovtek Preamp Vacuum Tube, 12AX7WB SKU#: T-SOV-12AX7WB
    $14.10
    Out of stock
  6. Rating:
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    Sovtek Preamp Vacuum Tube, 12AX7WA SKU#: T-SOV-12AX7WA
    $13.80
    Out of stock
  7. Rating:
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    Sovtek Preamp Vacuum Tube, 12AX7LPS SKU#: T-SOV-12AX7LPS
    $13.00
    Out of stock
  8. Rating:
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    Mullard Reissue Preamp Vacuum Tube, 12AX7 SKU#: T-MUL-12AX7
    $19.35
    Out of stock
  9. Rating:
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    JJ Preamp Vacuum Tube, ECC803/12AX7 Gold Pin SKU#: T-JJ-ECC803-GOLD
    $30.75
    Out of stock
  10. Rating:
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    JJ Preamp Vacuum Tube, ECC803/12AX7 SKU#: T-JJ-ECC803
    $15.68
    Out of stock
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