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JJ Electronics 12AX7 / ECC83 Preamp Vacuum Tube  

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JJ Electronics

This 12AX7/ECC83 preamp tube has a well-balanced, colorful tone with strongly defined lows and mids and smooth highs. It allows for more clean headroom than higher gain 12AX7s.


 
Customer Reviews
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Review Snapshot®

by PowerReviews
JJ Electronics12AX7 / ECC83 Preamp Vacuum Tube
 
4.2

(based on 21 reviews)

Ratings Distribution

  • 5 Stars

     

    (13)

  • 4 Stars

     

    (4)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (2)

94%

of respondents would recommend this to a friend.

Pros

  • Improves sound (12)
  • Good quality (11)
  • Easy to use (7)
  • Functional (6)

Cons

    Best Uses

    • Practicing (9)
    • Concerts (8)
    • Back-up (6)
      • Reviewer Profile:
      • Professional musician (8), Experienced (7)

    Most Liked Positive Review

     

    My tone has been reborn!

    I am a bass player and its hard to decide on which tube to choose when you buy your first tube amp. I have had this amp 4 yrs and never needed a tube...Read complete review

    I am a bass player and its hard to decide on which tube to choose when you buy your first tube amp. I have had this amp 4 yrs and never needed a tube until now. I originally purchased a tube of another brand and chose solely on the reviews and ratings and cost a few dollars more. It took away all the characteristics that made my favorite amp what it is. So I blindly bought these JJ tubes on the advice of a friend and I am completely happy. Owners manual called for a Groove Tube but I wanted something else and a Mesa tube was in my amp but I wanted to order from MF and I didnt see any Mesa tubes here. I am very happy!

    My low ends are back!! My lo mids are back and my attack is all there again. I love the way the gain can make the sound flow or growl. I have a hot set up in my bass and the other tube I put in, it took all of what I loved about bass amp away. It took out all my lower freqs. And my tone was tinnier with a slight ring to it. But after some major eq tweeks I was able to get it almost acceptable. But this JJ tube brought my eq settings back into the ballpark and gave me more of what I have been missing for a couple years now.

    VS

    Most Liked Negative Review

     

    made my amp sound awful

    As we all know, different tubes sound good in different amps. I would just personally not recommend this tube for a Mesa Dual Rec. I changed out all my preamp tubes with the...Read complete review

    As we all know, different tubes sound good in different amps. I would just personally not recommend this tube for a Mesa Dual Rec. I changed out all my preamp tubes with the jj's and it made the amp sound extremely noisy, fizzy and thin. I switched back to some mesa tubes and problem solved. Maybe I just got a bad set or something because jj's are supposed to be pretty good from what I hear. Also, Musiciansfriend really needs to change how they ship tubes. One of the tubes came to me already broken.

    Reviewed by 21 customers

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    Displaying reviews 1-10

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    4.0

    Smooth output

    By Goobie Jones

    from Rome, NY

    About Me Professional Musician

    Ask me a question

    Verified Buyer

    Pros

    • Good Quality
    • Improves Sound

    Cons

      Best Uses

      • Backup
      • Concerts
      • Practicing

      Comments about JJ Electronics 12AX7 / ECC83 Preamp Vacuum Tube:

      I mostly play through single stroke class A amplifiers with no frills. Having a good quality tube really stands out. The JJ Tesla's seem to be the better tube considering the fact that there are only 3 manufacturers making tubes. Went through several pre and power amp tubes recently relatively quick. Switch over to JJ Teslas and have had no issues. Full, thick signal with no noise. FYI: These are Groove Tubes' R3s.

      Comment on this review

       
      5.0

      Improved Sound !!!

      By Kailash soundz

      from Ljubljana. Slovenia

      About Me Professional Musician

      Ask me a question

      Verified Reviewer

      Pros

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

      Cons

        Best Uses

        • Concerts
        • Practicing

        Comments about JJ Electronics 12AX7 / ECC83 Preamp Vacuum Tube:

        I am professional musician with over 7 years of active concerting and recording. I have replaced pre amp valve in my Bugera V5, took out stock and put in JJ. Better and stronger sound but in a good way. Stronger clean and more full overdrive. Very Happy !

        Comment on this review

         
        5.0

        Cleaner, crisper.

        By Antprs24

        from Texas

        About Me Professional Musician

        Verified Buyer

        Pros

        • Easy To Use
        • Good Quality
        • Great Tone Possibilities
        • Improves Sound

        Cons

          Best Uses

            Comments about JJ Electronics 12AX7 / ECC83 Preamp Vacuum Tube:

            I bought these tubes to replace the stock Chinese tubes in a preamp (ART mpa II) and it sounds MUCH better. I'll definitely buy more of these to replace tubes in other gear.

            Comment on this review

            (1 of 1 customers found this review helpful)

             
            3.0

            Waste of my time

            By RW65

            from New York

            About Me Professional Musician

            Ask me a question

            Pros

            • Functional

            Cons

            • Tone Very Bassy

            Best Uses

            • Backup
            • Concerts
            • Practicing

            Comments about JJ Electronics 12AX7 / ECC83 Preamp Vacuum Tube:

            Ok, everyone likes a certain type of tone. When i pulled the generic tubes from my Peavey Classic 30 i can tell you two things. Power increased (which was fine). However all the highs and overtones were lost. If you will be using alot of distortion, than this is your tube. But for clean playing or versatilty in rhythm playing, i would not recommend this.Its just real dark and bassy.

            Comment on this review

             
            1.0

            Unexpected Failure

            By John Anthony

            from Del Norte Co., CA

            About Me Experienced

            Verified Buyer

            Pros

              Cons

              • Not Functional
              • The Jj 12ax7 Failed Fast

              Best Uses

                Comments about JJ Electronics 12AX7 / ECC83 Preamp Vacuum Tube:

                The JJ Electronics 12AX7 preamp tube failed within minutes of operation in an Alesis Mic Tube Solo Preamp. This tube is not favored for tone over the China 12AX7 which was reinstalled.

                Comment on this review

                 
                4.0

                Great tube

                By Shadowrath

                from Los Angeles, CA

                About Me Professional Musician

                Verified Buyer

                Pros

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

                Cons

                  Best Uses

                  • Backup
                  • Concerts
                  • Practicing

                  Comments about JJ Electronics 12AX7 / ECC83 Preamp Vacuum Tube:

                  The tube worked great out of the box...no problems, no hassles...as a test I used it as the first pre-amp tube in my Dual Recto and it sounds fantastic....right away gave a boost to my amp.

                  Comment on this review

                  (1 of 2 customers found this review helpful)

                   
                  5.0

                  Sweet

                  By freefllan2dz

                  from Houston, TX

                  About Me Novice

                  Pros

                  • Good Quality
                  • Improves Sound

                  Cons

                    Best Uses

                    • Backup
                    • Practicing
                    • Zoom G92tt

                    Comments about JJ Electronics 12AX7 / ECC83 Preamp Vacuum Tube:

                    I bought 2 of these and put in my Zoom G9.2tt pedal. The stock tubes that came in it were starting to give me some dreadful feedback and the tone was muffled. I originally bought GT-12ax7-C and the GT-12ax7-R2 on advice from an internet article and maybe I just got a bad pair or maybe the matching was not right but they did little to correct the issue. So, not knowing if the tubes were the issue I took a chance and ordered 2 of the JJ's and I couldn't be happier.

                    Comment on this review

                    (0 of 1 customers found this review helpful)

                     
                    5.0

                    Dependable

                    By Buck

                    from The Swamplands of Louisiana

                    About Me Professional Musician

                    Ask me a question

                    Verified Buyer

                    Pros

                    • Tone

                    Cons

                    • None

                    Best Uses

                    • Backup
                    • Concerts
                    • Practicing

                    Comments about JJ Electronics 12AX7 / ECC83 Preamp Vacuum Tube:

                    I have used them all unless U can get a hold of some NOS these are the most relaible out there and the tone is just right. I use em in my Bad Cat, Matchless. my UA LA610 and all of my other studio gear. 1176,ect...

                    Comment on this review

                     
                    4.0

                    less gain than my stock,and that's good

                    By ThommyBoy

                    from Coastal North Carolina

                    About Me Experienced

                    Verified Buyer

                    Pros

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

                    Cons

                      Best Uses

                      • Concerts

                      Comments about JJ Electronics 12AX7 / ECC83 Preamp Vacuum Tube:

                      Nice little tube, used it replaced the tube in my Bugera V-5 that seemed to break up very quickly, this tube provides more headroom, which is what I was looking for, would buy again

                      Comment on this review

                       
                      5.0

                      Tubes

                      By Rick Volkert

                      from Georgia

                      About Me Experienced

                      Verified Buyer

                      Pros

                      • Improves Sound

                      Cons

                      • None

                      Best Uses

                      • Practicing

                      Comments about JJ Electronics 12AX7 / ECC83 Preamp Vacuum Tube:

                      What can I say, they replaced my old tubes and now my amp is sounding awesome

                      Comment on this review

                      Displaying reviews 1-10

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