PRESIDENT'S DAY DOORBUSTERSSAVE UP TO $300 OFF
  • Shop by Category
  • Hot Deals
  • Looking for Coupons? Call us

MF MD HG Presidents Day Coupon 02-05-16
Best Seller
Electro-Harmonix Logo
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

In Stock & Ready To Ship

  • List:
    $22.17
  • Shipping (48 Contiguous U.S. States)
    FREE
  • Your Price:
    $1199
  Add to Cart
Add to Wish List
See All Electro-Harmonix Preamp Tubes
Musician's Friend Backstage Pass

Earn up to 96 in points.

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
 
4.2

(based on 41 reviews)

Ratings Distribution

  • 5 Stars

     

    (26)

  • 4 Stars

     

    (7)

  • 3 Stars

     

    (2)

  • 2 Stars

     

    (2)

  • 1 Stars

     

    (4)

85%

of respondents would recommend this to a friend.

Pros

  • Good quality (12)
  • Easy to use (11)
  • Improves sound (11)
  • Functional (10)

Cons

No Cons

Best Uses

  • Concerts (13)
  • Practicing (12)
  • Back-up (10)
    • Reviewer Profile:
    • Experienced (12), Professional musician (7)

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 41 customers

Displaying reviews 1-10

Back to top

Previous | Next »

 
5.0

yes

By 

from colorado springs colorado

About Me Professional Musician

Verified Buyer

Pros

    Cons

      Best Uses

      • Concerts

      Comments about Electro-Harmonix 12AX7EH Preamp Tube:

      tubes for a fender M-80

      Comment on this reviewHelp Icon

       
      5.0

      Electro Harmonix

      By 

      from Minnesota

      About Me Professional Musician

      Verified Buyer

      Pros

      • Improves Sound

      Cons

        Best Uses

        • Concerts
        • Practicing

        Comments about Electro-Harmonix 12AX7EH Preamp Tube:

        Package delivered on time in perfect condition

        Comment on this reviewHelp Icon

        (1 of 2 customers found this review helpful)

         
        5.0

        Good tubes

        By 

        from Lafayette, IN

        About Me Experienced

        Ask me a question

        Verified Buyer

        Pros

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

        Cons

          Best Uses

          • Backup
          • Concerts
          • Practicing

          Comments about Electro-Harmonix 12AX7EH Preamp Tube:

          see my revew for the 6L6-EH tubes, I changed them all at the same time.

          Comment on this reviewHelp Icon

          (0 of 1 customers found this review helpful)

           
          5.0

          good tube

          By 

          from MA

          About Me Professional Musician

          Ask me a question

          Verified Buyer

          Pros

          • Functional
          • Good Quality
          • Improves Sound

          Cons

            Best Uses

            • Concerts
            • Practicing

            Comments about Electro-Harmonix 12AX7EH Preamp Tube:

            one of the better new tubes on the market right now

            Comment on this reviewHelp Icon

            (0 of 1 customers found this review helpful)

             
            5.0

            Good choice for my needs. Great service via phone.

            By 

            from Ohio

            About Me Experienced

            Verified Buyer

            Pros

            • Easy To Use
            • Good Quality
            • Improves Sound

            Cons

              Best Uses

                Comments about Electro-Harmonix 12AX7EH Preamp Tube:

                Used in DAC. Improved sound of my audio system.

                Comment on this reviewHelp Icon

                (1 of 1 customers found this review helpful)

                 
                3.0

                can bring new life to amp

                By 

                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 reviewHelp Icon

                 
                5.0

                Great preamp tube

                By 

                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 reviewHelp Icon

                  (1 of 6 customers found this review helpful)

                   
                  4.0

                  The tubes arrived undamaged, and on time

                  By 

                  from Lapeer, Michigan

                  About Me Professional Musician

                  Comments about Electro-Harmonix 12AX7EH Preamp Tube:

                  The tubes arrived on time, unscathed and worked perfectly.

                  Comment on this reviewHelp Icon

                  (1 of 1 customers found this review helpful)

                   
                  4.0

                  Buy these Not that

                  By 

                  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 reviewHelp Icon

                    (1 of 1 customers found this review helpful)

                     
                    1.0

                    Microphonic after 3 weeks

                    By 

                    from Chandler, AZ

                    About Me Professional Musician

                    Ask me a question

                    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 reviewHelp Icon

                    Displaying reviews 1-10

                    Back to top

                    Previous | Next »

                    Ship To: US Flag
                    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.