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Item # 101001378 | Customer Ratings: Ratings ( 4 Based on 7 reviews)

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Electro-Harmonix 12AX7EH Preamp Tube
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      Electro-Harmonix 12AX7EH Preamp Tube (101001378)
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The Electro-Harmonix 12AX7EH is a preamp tube that provides high gain with ultra low noise. The tube's detailed, musical tone rivals the most desirable NOS types. Unique spiral filament eliminates the filament-to-cathode induced hum common on amps that use AC on the filaments.

Electro-Harmonix 12AX7EH Preamp Tube

One year warranty on pedals. 90 day warranty on all other products.

Get your gear covered!

Now you can get added warranty protection for your new gear. Pro Coverage steps in where the manufacturer's "normal wear and tear" ends. Our PRO COVERAGE program offers you UPGRADED COVERAGE if your product ever fails!

Pro Coverage includes:

  • Accidental damage protection (new gear only)
  • Expedited Repair
  • Free Shipping (for returns or repairs)
  • 100% Coverage for Commercial Use
  • Extended Return Period
  • Extended Price Protection
  • No Lemon Guarantee
  • Free Transfer of Coverage to a new owner
  • Repair Costs Covered for up to 3 years from date of purchase
  • Repairs Can Be Authorized Toll-Free by Phone or the via the web
Product Reviews
(Based on 7 reviews)
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Viewing Reviews 1 - 3 of 7 |
  • Killer Tubes

    As reviewed by Guitarguy3120 on 3/23/2010

    I am using a Crate Blue Voodoo Halfstack with the 50 watt head. I origianlly had Sovtek 12AX7WB in the preamp and Sovtek 5881's in the power section. I found it to be a bit shrilly...just too much noise. I tried some KT77's, too much bottom. Switched to 5881 and the Electro 12ax7 in the preamp and driver position and love it. I have my gain at 1 o'clock and it is almost too much. I can hit the super-driven Judas Priest or Fight and even the Megadeth gain( since Marty Friedman used these amps ).

    4 of 4 people found this review helpful.
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  • Good tube

    As reviewed by Raiden on 12/8/2008

    Electro Harmonix is one of the best brands.....This tube powers you up with a high amount of gain and no fuzz at all or feedback. Its really good I recommend it

    25 of 34 people found this review helpful.
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  • Best Ever

    As reviewed by Mike Ketlo on 8/3/2010

    I've had a Marshall Jcm800 50watt Giving to me from a guy who didnt play as much, and this amp has never had its tubes changed, when i threw out the old ones and put in a matched pair of these it was awsome, very tight warm sound with the right fuzz and little to no feedback depending on the guitar i highly recommend these tubes.

    6 of 8 people found this review helpful.
    Was this review helpful?
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