• Gift Certificate
  • Track Order
  • Help
  • Feedback [+]
  • Ship To: US Flag
  • Shop All Categories
  • Hot Deals

MF MD HG Doorbusters Closeout 12-5-14
SKU 
210088 000000000

Electro-Harmonix 12AX7EH Preamp Tube  

  • Write a Review

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 desirab...Read More

  • MSRP:
    $22.17
  • Your Savings:
    - $6.78
  • Shipping (48 Contiguous U.S. States)
    FREE
  • Your Price:
    $1539

In Stock & Ready To Ship

  Add to Cart Add to Wishlist
See All Electro-Harmonix Preamp Tubes

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.


Order tubes BEFORE they need to be replaced, and save the gig.

Reviews
Loading....

Review Snapshot®

by PowerReviews
Electro-Harmonix12AX7EH Preamp Tube
 
4.1

(based on 36 reviews)

Ratings Distribution

  • 5 Stars

     

    (21)

  • 4 Stars

     

    (7)

  • 3 Stars

     

    (2)

  • 2 Stars

     

    (2)

  • 1 Stars

     

    (4)

80%

of respondents would recommend this to a friend.

Pros

  • Easy to use (9)
  • Good quality (9)
  • Functional (8)
  • Improves sound (7)

Cons

    Best Uses

    • Back-up (9)
    • Concerts (9)
    • Practicing (9)
      • Reviewer Profile:
      • Experienced (10), Professional musician (4)

    Most Liked Positive Review

     

    Better than Average Tube

    Excellent tubes for alot of applications!
    I've been playing around and using Tube Amps for more than 30 years now. I have tried just about every 12AX7 or 12AX7 family of tubes...Read complete review

    Excellent tubes for alot of applications!
    I've been playing around and using Tube Amps for more than 30 years now. I have tried just about every 12AX7 or 12AX7 family of tubes available. These are very good tubes, If used in the right amp. What I have found is every amp, even the same models of the same brands are different in the way they respond to tubes. This means that you have to experiment to find what sounds good to you in your amp. I put one of these in the V1 in my Fender HRD and it was very "glassy" and articulate, however almost brittle sounding. Too much so for me. I then put it in my Kustom 5H Defender I just got too long ago from Musicians Friend and it was fantastic sounding! With that amp it sounds warm, clear and has just the right amount of clarity and growl at the same time. Incidentally I also tried this tube with the Gold pins which costs about $5.00 more. The Gold Pin tube is warmer, which is good for a bright amp, but in a naturally darker sounding amp like my Bassman it sounded Muddy. The original EH 12AX7 here though was great! My advice is to experiment within your budget and keep these tubes in mind as a great starting point!
    Very Well made tube!
    Very appropiate pricing in today's market! I do wish Musicians Friend would explain their grading system on tubes though, it is very different from other tube supplier's websites. Musicians Friend has very competitive pricing with everyone else, sometimes better, but their grading system is confusing when you are used to terms like "Balanced Triodes", "Matched and balanced" etc. Soft and hard really doesn't tell you much.

    VS

    Most Liked Negative Review

     

    can bring new life to amp

    Bought this to add to arsenal for tube rolling on Vox Night Train 15 (the first version). Too bright/trebly for V1 spot. Also lowered headroom for cleans compared to some old GE...Read complete review

    Bought this to add to arsenal for tube rolling on Vox Night Train 15 (the first version). Too bright/trebly for V1 spot. Also lowered headroom for cleans compared to some old GE long gray plates I bought. Dropped in V2 spot with the old GE in V1 and sounds like a brand new amp. Recorded the tube rolling process and you can really hear the difference. EH way too harsh in V1. If you have Night Train I recommend dumping the Sovteks in pre and power amp sections immediately and get some old Amperex (Holland) EL84s for power section and old long plate (black if you can afford) in V1. Have only tried the EH 12ax7 as far as new manufactured but they really shine in V2.

    Reviewed by 36 customers

    Sort by

    Displaying reviews 1-10

    Back to top

    Previous | Next »

     
    3.0

    can bring new life to amp

    By The Camel's Hump

    from Fayetteville, TN

    About Me Experienced

    Pros

    • Easy To Use
    • Functional
    • Good Quality
    • Improves Sound

    Cons

    • Very Bright Can Be Con

    Best Uses

    • Backup
    • Practicing
    • V2 For Vox Night Train

    Comments about Electro-Harmonix 12AX7EH Preamp Tube:

    Bought this to add to arsenal for tube rolling on Vox Night Train 15 (the first version). Too bright/trebly for V1 spot. Also lowered headroom for cleans compared to some old GE long gray plates I bought. Dropped in V2 spot with the old GE in V1 and sounds like a brand new amp. Recorded the tube rolling process and you can really hear the difference. EH way too harsh in V1. If you have Night Train I recommend dumping the Sovteks in pre and power amp sections immediately and get some old Amperex (Holland) EL84s for power section and old long plate (black if you can afford) in V1. Have only tried the EH 12ax7 as far as new manufactured but they really shine in V2.

    Comment on this review

     
    5.0

    Great preamp tube

    By sonoranscout

    from Phoenix, AZ

    About Me Experienced

    Ask me a question

    Pros

    • Easy To Use
    • Functional
    • Good Quality
    • Improves Sound

    Cons

      Best Uses

      • Backup
      • Concerts
      • Practicing

      Comments about Electro-Harmonix 12AX7EH Preamp Tube:

      One of my favorite presmp tubes. Sound is well balanced, with good bass, excellent mids, and clear, crisp highs.

      Comment on this review

      (1 of 3 customers found this review helpful)

       
      4.0

      The tubes arrived undamaged, and on time

      By k-bone

      from Lapeer, Michigan

      About Me Professional Musician

      Pros

        Cons

          Best Uses

            Comments about Electro-Harmonix 12AX7EH Preamp Tube:

            The tubes arrived on time, unscathed and worked perfectly.

            Comment on this review

            (1 of 1 customers found this review helpful)

             
            4.0

            Buy these Not that

            By Lilpbass

            from Small Town, USA

            About Me Experienced

            Pros

            • Good Quality
            • Russian

            Cons

              Best Uses

              • Backup
              • Concerts
              • Practicing

              Comments about Electro-Harmonix 12AX7EH Preamp Tube:

              New Sensor Corp. ie Electro Harmonix manufactures ALL tubes that come from Russia. That would include EH, JJ, Genalex, Mullard, Northern Electric....then someone else makes all the Chinese tubes: Shuguang, Ruby...I figure a Russian is a Russian. These work just fine, they are middle of the road on price. I did put Duente Criatura rings on them. I noticed more harmonics on the top end and a small amount of clarity gained on the bottom.

              Comment on this review

               
              1.0

              Microphonic after 3 weeks

              By Sounds Underground

              from Chandler, AZ

              About Me Professional Musician

              Ask me a question

              Pros

                Cons

                  Best Uses

                    Comments about Electro-Harmonix 12AX7EH Preamp Tube:

                    I have 3 of these in my USA SVT-CL Ampgeg head. After just a few weeks of moderate playing both preamp tubes became microphonic and the driver tube had a nasty 60hz hum.

                    Comment on this review

                    (1 of 1 customers found this review helpful)

                     
                    5.0

                    Warm Tube with Great Harmonics

                    By Mr. Guitar

                    from Appomattox, Va

                    About Me Experienced

                    Ask me a question

                    Pros

                    • Easy To Use
                    • Functional
                    • Good Quality
                    • Great harmonics
                    • Improves Sound
                    • Warm tone

                    Cons

                    • May Get Muddy
                    • May Sound Muddy

                    Best Uses

                    • Backup
                    • Concerts
                    • Overdrive Channel
                    • Overly Bright Amplifier
                    • Practicing

                    Comments about Electro-Harmonix 12AX7EH Preamp Tube:

                    I have a Fender Super Champ XD and Fender Deluxe Vintage Modified. I'm not an electronics expert so I can't tell you why, but !!!! I don't care for these amplifiers with any other preamp tube. This tube really wakes the VM series amps up. The Super Champ XD only uses one 12AX7 and I only replaced the preamp tube closest to the input jack on the Deluxe VM. This was money well spent, these amps now SOUND GREAT !!!

                    Comment on this review

                     
                    4.0

                    great tube

                    By goldtop1061

                    from sgf,mo

                    About Me Experienced

                    Ask me a question

                    Verified Buyer

                    Pros

                    • Easy To Use
                    • Good As Any

                    Cons

                    • Any Tube Can Fail

                    Best Uses

                    • Concerts
                    • Mesa Nomad

                    Comments about Electro-Harmonix 12AX7EH Preamp Tube:

                    dont waste your money on high priced tubes, a russian tube is a russian tube,who cares what name they have on them they all come from the same factory anyway ! some test better than others its a roll of the dice & these work as good as any i've used

                    Comment on this review

                     
                    4.0

                    Tubes ok, but poor packing

                    By Bk

                    from South

                    About Me Professional Musician

                    Ask me a question

                    Verified Buyer

                    Pros

                    • Easy To Use
                    • Functional
                    • Good Quality
                    • Improves Sound

                    Cons

                      Best Uses

                        Comments about Electro-Harmonix 12AX7EH Preamp Tube:

                        Just like the title - tubes were ok, but there was almost no packing so they rattled around in the box. I'm surprised they still worked!

                        Comment on this review

                        (0 of 1 customers found this review helpful)

                         
                        5.0

                        Great Tube

                        By blacksuit41314

                        from Booneville, KY

                        About Me Experienced

                        Pros

                        • Easy To Use
                        • Functional
                        • Good Quality
                        • Improves Sound

                        Cons

                        • None

                        Best Uses

                        • Backup
                        • Concerts
                        • Practicing

                        Comments about Electro-Harmonix 12AX7EH Preamp Tube:

                        I replaced the stock ECC83 in a Marshall AVT 100 combo with this EH 12ax7 and WOW what a difference.

                        Comment on this review

                        (1 of 1 customers found this review helpful)

                         
                        5.0

                        nice rounded tone

                        By tenpennygrin

                        from Maine

                        About Me Experienced

                        Verified Buyer

                        Pros

                        • Good Quality
                        • Improves Sound

                        Cons

                          Best Uses

                          • Backup
                          • Concerts
                          • Practicing

                          Comments about Electro-Harmonix 12AX7EH Preamp Tube:

                          just put a complete set of eh tubes in my peavey classic 30 and it sounds better than it has in a long time. Nice clean tone and nice thick dirty channel and no wierd noises...awesome

                          Comment on this review

                          Displaying reviews 1-10

                          Back to top

                          Previous | Next »

                          You are changing the Ship-To country.

                          Our product catalog varies by country due to manufacturer restrictions. If you change the Ship-To country, some or all of the items in your cart may not ship to the new destination.