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Electro-Harmonix 12AX7EH Preamp Tube


(6 reviews)


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The 12AX7EH is the top choice for guitar amps. It provides high gain with ultra low noise and a detailed, musical tone that rivals the most desirable NOS types.

Things You Will Get:

  • Tube

I will buy this again and again!


Sounds great. Dependable tone.



Quick fix


This was a life saver for me. Needed an immediate fix for my amp and the guys at Sam Ash on Lee Rd Orlando Fl took care of me quickly and it was the best service as always. Thanks again, fellas! Y'all are the very best and I'll always come back to see y'all without hesitation.



2el34 and 3 12ax7 electro harmonix tubes in my Marshall haze


Great product

The pack

HB socal


Great Tubes!!!


I don't know what the dude with the Fender Champion was expecting, but I don't think a pre amp tube can distort one single string. Anyways... these are pre amp tubes, not power tubes... I might be wrong abut this, but as far as I know, the power tubes and their ratings are what dictates how early an amp breaks up or not... you can definitely push the pre amp tubes harder and create break up in just the pre amp tubes... But just the E string? mmm... I don't know but I found this tubes to really improve my tone and my amps ability to take pedals with a lot of bite!!! I still prefer Svetlana's or Tung Sol's , but these come in 3rd... better than JJ's and Groove Tubes in my opinion... I think it's a decent sounding pre amp tube... not perfect. But maybe JJ's would be a cheaper and overall "can't go wrong with JJ's kinda thing"

Subtle System

San Diego, Ca.


Not what I expected


I bought the tube in the Sam Ash Huntington, NY store as a replacement for the factory 12AX7 in my Fender Champ XD practice amp. Tone got richer and the tube has more gain than the OEM tube but there was a very early breakup on the lower E string that made playing at low distortion levels challenging. There must be better tubes out there.

NY country

Long Island


Good, Solid Tube


Solid, reliable tube. Came as stock pre-tube in my amp.


Long Beach, CA


12AX7EH Preamp Tube

4.2 6


Model 12AX7EH
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