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MF MD HG July Financing 7-22-14

Ruby ECC83 (12AX7A) Preamp Tube  

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#212034000000000
Top Rated

Overview

  • Lower gain, full robust tone
  • Matched parameters for optimal performance and long life
Description & Specs
  • MSRP:
    $17.50
  • Your Savings:
    - $3.51
  • Your Price:
    $1399

In Stock & Ready To Ship

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Ruby

Get that true Marshall tone!

The Ruby Tubes ECC83 (12AX7A) Preamp Tube is a hand-picked Tesla with low gain and full, robust tone. Comes with a 6-month replacement warranty.

Features

  • Lower gain, full robust tone
  • Matched parameters for optimal performance and long life

Get your head together with some Rubys. Order today!

 
Customer Reviews
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Review Snapshot®

by PowerReviews
RubyECC83 (12AX7A) Preamp Tube
 
4.5

(based on 28 reviews)

Ratings Distribution

  • 5 Stars

     

    (20)

  • 4 Stars

     

    (5)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (1)

  • 1 Stars

     

    (1)

57%

of respondents would recommend this to a friend.

Pros

  • Improves sound (5)
  • Easy to use (4)
  • Functional (4)
  • Good quality (4)

Cons

    Best Uses

    • Concerts (3)
    • Practicing (3)
      • Reviewer Profile:
      • Experienced (4), Professional musician (3)

    Most Liked Positive Review

     

    Ruby ECC83 -- a less expensive JJ

    In case you are unaware, Ruby does not actually make tubes. They package tubes from other manufacturers. The description describes this as a low gain Tesla. If you are looking for a low...Read complete review

    In case you are unaware, Ruby does not actually make tubes. They package tubes from other manufacturers. The description describes this as a low gain Tesla. If you are looking for a low gain 12AX7, this is really not it. Ruby sells several 12AX7s and this is the higher gain of them. The lower gain versions are the Sino Chinese tubes from the Shuguang factory. This is a JJ branded Tesla from Slovakia. I've tried several tubes including the Russian EH and Sovteks and find the JJs to sound best and be most consistant. I've stopped wasting time and money tracking down vintage tubes and am very happy with the JJs for all of my bass and guitar amps. By the way, if you are going to buy a JJ, I think the Ruby is a better deal. As I said, it is a JJ in a Ruby box. It may be better than one in a JJ box because it is likely that Ruby pretests and picks only those that meet their standards. It is also cheaper. Go figure...
    n/a
    Good enough that I no longer feel the need to seek out vintage RCA, Raytheon, Philips, Telefunkens, etc.

    I use these in my Hughes & Kettner units (BATT, Blues Master, Cream Machine & Metal Master) as well as my Fender Champion 600.
    Great price for an excellent tube.

    VS

    Most Liked Negative Review

     

    ruby ECC83s

    these tubes are marketed for hard rock / metal and after installing, my gain, distortion, and sustain were all markedly reduced. my rig sounds nothing like it did before.

    these tubes are marketed for hard rock / metal and after installing, my gain, distortion, and sustain were all markedly reduced. my rig sounds nothing like it did before.

    Reviewed by 28 customers

    Sort by

    Displaying reviews 1-10

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    5.0

    Great for Marshalls

    By BlackBelt

    from Memphis

    About Me Professional Musician

    Ask me a question

    Pros

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

    Cons

      Best Uses

        Comments about Ruby ECC83 (12AX7A) Preamp Tube:

        I bought this to replace the preamp tube in my Marshall AVT50H amp head. Since NOS (new old stock) original tubes are up to 5 times the cost of this tube now, I needed a less expensive quality replacement for my amp. This works perfectly and reduced the microphonic squeals and hums that the old tube was producing. Highly recommended for Marshalls.

        Comment on this review

         
        1.0

        fast delivery but expensive shipping

        By broba

        from sweden

        About Me Professional Musician

        Verified Buyer

        Pros

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

        Cons

          Best Uses

          • Concerts
          • Practicing

          Comments about Ruby ECC83 (12AX7A) Preamp Tube:

          the price for the tubes was ok but shipping and custom cost was to high to make this a good buy.

          Comment on this review

          (2 of 6 customers found this review helpful)

           
          3.0

          Tube was mispackaged.....

          By woody

          from south carolina

          About Me Experienced

          Verified Buyer

          Pros

          • Functional

          Cons

            Best Uses

            • Backup

            Comments about Ruby ECC83 (12AX7A) Preamp Tube:

            Called Musicians Friend and they sent me another tube and it was marked the same too. Inside the "Ruby" tube packaging was a "JJ" tube with a small sticker marked Ruby 12ax7. The tube was a JJ ECC83S.....again, called Musicians Friend to tell them they were selling a JJ labeled tube that was in a Ruby tube package.

            Comment on this review

             
            4.0

            Warmer Tone, Less Piercing Highs

            By Krimson

            from El Paso, TX

            About Me Professional Musician

            Pros

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

            Cons

              Best Uses

              • Concerts
              • Practicing

              Comments about Ruby ECC83 (12AX7A) Preamp Tube:

              Ordered these tubes for my Engl Screamer. First thing I noticed was that the Tubes were made by JJ. The label on the Ruby Box had the number 12AX7ACZ-HG. The description from various websites states "Highest gain 12AX7, great for metal and hard rock. Selected high grade JJ ECC83", not really how they are described here on Musicians Friend.

              The Engle Screamer is a 2 channel 4 mode amp that shares the EQ. These tubes helped to tame the piercing highs and made the clean channel much warmer, almost to warm. Missing some of the highs but it did help to balance the eq between the clean and lead channels. I can actually push the high and presence knobs past 12 o'clock. So I guess it made those tones knobs a little more usuable. I still would like to find a tube with 25% more of the highs that I lost.

              Comment on this review

              (1 of 1 customers found this review helpful)

               
              2.0

              ruby ECC83s

              By admi

              from soky

              About Me Experienced

              Verified Buyer

              Pros

              • Easy To Use
              • Very Quiet

              Cons

                Best Uses

                  Comments about Ruby ECC83 (12AX7A) Preamp Tube:

                  these tubes are marketed for hard rock / metal and after installing, my gain, distortion, and sustain were all markedly reduced. my rig sounds nothing like it did before.

                  Comment on this review

                  (1 of 1 customers found this review helpful)

                   
                  5.0

                  Simply excellent quality tubes

                  By Diamond Dave

                  from Dallas, TX

                  About Me Experienced

                  Pros

                  • Affordable
                  • Good Quality
                  • Improves Sound
                  • Low Microphonics

                  Cons

                  • None so far

                  Best Uses

                  • Preamp

                  Comments about Ruby ECC83 (12AX7A) Preamp Tube:

                  I purchased the AC5 HG+ version of the Ruby 12AX7 for the V1 position in my Hughes & Kettner head (used a Ruby 7025 SS in V2), and it truly improved the sound over the stock tubes, with improved harmonics and more clarity in pick-attack. The sound improvement was CLEARLY noticable...which I didn't expect.

                  The Ruby's were my third and final choice, previously trying both Tung-Sol and Mullard reissues with unimpressive results on the overdrive. The Tung-Sol did sound a little sweeter on the clean channel, but I preferred the Ruby tubes for distortion...and that is what I'm playing 85% of the time.

                  Yes, as others here have mentioned, these are re-branded JJ tubes...but I dont think you can find a better quality, low-microphonic tube for the money. For me, a product rating is either "Thumbs Up" or "Thumbs Down", based solely on if I would buy it again...and I would absolutely buy the Ruby tubes again!!

                  But as Dennis Miller used to say..."Of course, that's just my opinion, I could be wrong."

                  Comment on this review

                  (1 of 1 customers found this review helpful)

                   
                  5.0

                  Great tube for high-gain amps.

                  By Bridge

                  from Brookhaven, MS

                  About Me Experienced

                  Verified Buyer

                  Pros

                  • Improves Sound

                  Cons

                    Best Uses

                    • Backup
                    • Concerts
                    • Practicing

                    Comments about Ruby ECC83 (12AX7A) Preamp Tube:

                    Recently I purchased some 12AX7 Tung-Sols for an SL+ module for my Randall RM1250H. While they did breathe life back into the preamp, it was a bit TOO warm for what I hoped the module would do. So, I sent it to Jaded Faith Mods for a complete overhaul. The owner of the company made the suggestion that I try Ruby tubes instead for gain purposes. When I confirmed this with my cousin who has great experience with tubes he agreed, saying that Sovtek would probably be too noisy for my taste while Ruby was just noisy enough without being overbearing. They were both absolutely right. The Sl+ was converted into the "Bed of Nails #1" module (unofficially dubbed "The Marshall from Hell") & it sounded wonderful with the Tung-Sols still installed, but when I put the Ruby tubes in....the sound I was looking for began to present itself. The Jaded Faith "Bed of Nails #1," with the help of Ruby tubes, gives my Salvation Mods "Camerock" a run for its money (and that's saying a lot.)

                    Comment on this review

                    (10 of 11 customers found this review helpful)

                     
                    5.0

                    Ruby ECC83 -- a less expensive JJ

                    Comments about Ruby ECC83 (12AX7A) Preamp Tube:

                    In case you are unaware, Ruby does not actually make tubes. They package tubes from other manufacturers. The description describes this as a low gain Tesla. If you are looking for a low gain 12AX7, this is really not it. Ruby sells several 12AX7s and this is the higher gain of them. The lower gain versions are the Sino Chinese tubes from the Shuguang factory. This is a JJ branded Tesla from Slovakia. I've tried several tubes including the Russian EH and Sovteks and find the JJs to sound best and be most consistant. I've stopped wasting time and money tracking down vintage tubes and am very happy with the JJs for all of my bass and guitar amps. By the way, if you are going to buy a JJ, I think the Ruby is a better deal. As I said, it is a JJ in a Ruby box. It may be better than one in a JJ box because it is likely that Ruby pretests and picks only those that meet their standards. It is also cheaper. Go figure...
                    n/a
                    Good enough that I no longer feel the need to seek out vintage RCA, Raytheon, Philips, Telefunkens, etc.

                    I use these in my Hughes & Kettner units (BATT, Blues Master, Cream Machine & Metal Master) as well as my Fender Champion 600.
                    Great price for an excellent tube.

                    Comment on this review

                    (2 of 2 customers found this review helpful)

                     
                    4.0

                    Ruby Review

                    By La rana

                    from Eugene Oregon

                    Ask me a question

                    Comments about Ruby ECC83 (12AX7A) Preamp Tube:

                    Overall the Ruby Tube is what it says it is, which these days is refreshing. It is a sold at a good price and the quality of the product is apparent. I recommend this product
                    Since its a tube there are no bells and whistles, but fact is, installed in my low end mic pre-amp, it has upgraded the pre-amp. Clean, high gain, warm tone coming out of my microphones. It's walking the walk.
                    It appears to be well constructed and info from other reviews indicate that it has a good life expectancy. I have used it constantly over the last 2 weeks and it is holding up well.
                    I looked around at many options, top end-low end, bulk prices vs individual, and bottom line, it is a great deal.

                    Comment on this review

                    (5 of 5 customers found this review helpful)

                     
                    5.0

                    Amazing Tone

                    By RebelRocker'73

                    from Undisclosed

                    Comments about Ruby ECC83 (12AX7A) Preamp Tube:

                    I just had to write a review on this tube. I bought it a while back to replace the stock pre-amp tube in my Marshall AVT 50 (2000 series).... The owner's manual for my Marshall stated over and over again,how great the factory installed tube is supposed to be. The gain structure was just too high,and turning the gain down made the amp sound too weak. I was just not able to get that full,vibrant,vintage tone. Until I installed the Ruby tube! Now,all is well. All of the rich harmonics are there. The full-bodied,robust sparkle now exudes from the amp. The gain structure and EQ are perfectly balanced. Even the reverb,which before was just,"so-so",is now comparable to any high-end reverb out there. If a much better sounding pre-amp tube is what you're looking for...GET THIS TUBE! You will be happy you did.
                    Best value and tone for the buck.

                    Comment on this review

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