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JJ Electronics 12AX7 / ECC83 Preamp Vacuum Tube

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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 headro...Click To Read More About This Product

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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.


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Review Snapshot

by PowerReviews
JJ Electronics12AX7 / ECC83 Preamp Vacuum Tube
 
4.5

(based on 57 reviews)

Ratings Distribution

  • 5 Stars

     

    (41)

  • 4 Stars

     

    (11)

  • 3 Stars

     

    (2)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (2)

98%

of respondents would recommend this to a friend.

Pros

  • Improves sound (41)
  • Good quality (40)
  • Easy to use (26)
  • Functional (26)

Cons

No Cons

Best Uses

  • Practicing (25)
  • Concerts (20)
  • Back-up (16)
    • Reviewer Profile:
    • Experienced (34), Professional musician (12), Novice (4)

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 57 customers

Displaying reviews 1-20

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(7 of 8 customers found this review helpful)

 
2.0

made my amp sound awful

By ReinventSquares

from Bay Area, CA

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

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.

(3 of 3 customers found this review helpful)

 
5.0

Overall better sound with these tubes

By bountyhunter

from Cedar lake In

See all my reviews

Pros

  • Good Quality
  • Improves Sound

Cons

    Best Uses

    • Epiphone Valve Jr Sounds
    • Practicing
    • Work Great In A Epiphone

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

    I put this tube in my epiphone valve jr. and heard the difference right away.Less muddy sounding

    (3 of 3 customers found this review helpful)

     
    5.0

    Sweetened a Carvin Vintage 16

    By Ross V

    from Colorado

    About Me Experienced

    See all my reviews

    Pros

    • Improves amp tone

    Cons

      Best Uses

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

        On the recommendation of an amp guru in Seattle, I replaced the factory Sovteks with these JJs in the preamp and JJ 6L6s in the power section. A positive change in tone was immediately noticeable: a warm, full sound replaced what had been a bit harsh and thin. The V16 is a nice amp, but it's much better with a full set of JJs.

        (3 of 5 customers found this review helpful)

         
        5.0

        My tone has been reborn!

        By armelind

        from Universal City, Tx

        About Me Professional Musician

        Verified Buyer

        Pros

        • Easy To Use
        • Good Quality
        • Improves Sound

        Cons

          Best Uses

          • Concerts
          • Practicing

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

          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.

          (2 of 2 customers found this review helpful)

           
          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.

              (2 of 2 customers found this review helpful)

               
              3.0

              Waste of my time

              By RW65

              from New York

              About Me Professional Musician

              See all my reviews

              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.

              (2 of 2 customers found this review helpful)

               
              5.0

              Better than factory issued.

              By OldSoul86

              from Milwaukee, WI

              About Me Experienced

              See all my reviews

              Ask me a question

              Pros

              • Good Quality
              • Improves Sound
              • Simple To Install

              Cons

                Best Uses

                • Replacing Original Parts

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

                I purchased this tube solely on reading the reviews. I own a Vox AD30VT amp, which after 6 years of ownership started giving me gain problems, so I took the cheapest route and tried to fix it with a preamp tube replacement. After replacing the original electro-harmonix 12AX7 tube with the JJ, the clean and overdrive/distortion tones came back with a huge improvement. Cleans have more clarity and gain, and the OD/distortion modes have a more pronounced crunch as well as volume. If you are looking for a simple replacement or want to hotrod your tone some, JJ is by far the way to go.

                (1 of 1 customers found this review helpful)

                 
                5.0

                Great tubes - great price!

                By stratsncats-meluv

                from Jacksonville, Florida

                About Me Experienced

                See all my reviews

                Pros

                • Good Quality
                • Improves Sound

                Cons

                  Best Uses

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

                    Wanted a good solid sound but not agressive at a reasonable cost. Installed in V2 the J.J Ax7 did the job masterfully. After tweaking I arrived at my amps ZEN sound; (with a J.J. Au7 in V4) the tone -sweet lush tube O.D. super crisp and crunchy also adds to presence. Price vs quality is the dealmaker! just what I was looking for. As usual MF has the price and greatest service.

                    (1 of 1 customers found this review helpful)

                     
                    4.0

                    Good value

                    By rudie

                    from western mass

                    About Me Experienced

                    See all my reviews

                    Ask me a question

                    Verified Buyer

                    Pros

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

                    Cons

                      Best Uses

                      • Practicing

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

                      I bought this tube to replace the stock Bugara tube in my Behringer Vintage OD pedal. It definately provided a nice creamy, musical sound although gain was much lower which wasn't a real issue, I just had to turn up the drive to match the amp. It was a nice improvement in overall sound for not much $$$$$.

                      (1 of 1 customers found this review helpful)

                       
                      4.0

                      Smooth output

                      By Goobie Caro

                      from Rome, NY

                      About Me Professional Musician

                      See all my reviews

                      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.

                        (1 of 1 customers found this review helpful)

                         
                        5.0

                        Improved Sound !!!

                        By Kailash soundz

                        from Ljubljana. Slovenia

                        About Me Professional Musician

                        See all my reviews

                        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 !

                          (1 of 3 customers found this review helpful)

                           
                          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.

                              (1 of 1 customers found this review helpful)

                               
                              4.0

                              Great tube

                              By Shadowrath

                              from Los Angeles, CA

                              About Me Professional Musician

                              See all my reviews

                              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.

                                (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.

                                  (1 of 2 customers found this review helpful)

                                   
                                  5.0

                                  Dependable

                                  By Buck

                                  from The Swamplands of Louisiana

                                  About Me Professional Musician

                                  See all my reviews

                                  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...

                                  (1 of 3 customers found this review helpful)

                                   
                                  5.0

                                  THE BEST GAIN/TONE AVAILABLE

                                  By ROCKING RON

                                  from West Dundee/ near Chicago Il.

                                  About Me Experienced

                                  See all my reviews

                                  Ask me a question

                                  Verified Buyer

                                  Pros

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

                                  Cons

                                    Best Uses

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

                                      These Tubes Rock there is no more to say. Except GAIN GAIN GAIN best money well spent.

                                      (1 of 2 customers found this review helpful)

                                       
                                      5.0

                                      Warm and Dark

                                      By Last Sunset Music.

                                      from Wy

                                      About Me Experienced

                                      See all my reviews

                                      Ask me a question

                                      Verified Buyer

                                      Pros

                                      • Good Quality
                                      • Improves Sound
                                      • Nice and warm gain

                                      Cons

                                      • None

                                      Best Uses

                                      • V 1 Peramp

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

                                      They sound good I mix them TAD tubes

                                      (1 of 1 customers found this review helpful)

                                       
                                      5.0

                                      new tube in a Vox ad30vt

                                      By Godfather Bones

                                      from oklahoma

                                      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:

                                        I had read that this was an improvement for this amps tone. But waited till my amp needed a tube before I changed it out. I wish I would have changed this out the day I got this amp! The tone with this new tube and a Ragin Cajun speaker is perfect for me.

                                        (1 of 1 customers found this review helpful)

                                         
                                        5.0

                                        Love this tube!

                                        By Brad Ovard

                                        from Utah

                                        See all my reviews

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

                                        My favorite 12ax7
                                        Sounds rich and full. Sounds better in every way than the other tubes I've been using. Highly recommended. The only position I don't use it for is the phase inverter but it's amazing in the V1 & V2 positions.
                                        Haven't had any issues.
                                        The price is awesome.

                                        (1 of 5 customers found this review helpful)

                                         
                                        5.0

                                        Less Power,More Great Tone....

                                        By toomanyguitars

                                        from Long Island, NY

                                        See all my reviews

                                        Ask me a question

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

                                        I am currently using this preamp tube with a EL84 based amplifier,and also as the power tube in the Behringer Vintage Tube Monster pedal.This is the only tube that sounded good on ALL settings;High gain,low gain,or just crunch.The pedal is spec'd for a 12AX7B(high gain)but that tube only worked correctly on high gain,on lower gain the 12AX7B choked out and sounded terrible.This tube is lower power, but the improvement in tone and dynamics was astounding.The only caveat was that I have to turn the master volume almost all the way up on the pedal(8) to match the amplifier.This is a QUALITY Chinese tube, a little more expensive then then the Shuguangs,but well worth it.Highly recommended.

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