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#212031 000000186

Ruby EL84CZ Premium Matched  Quartet

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A premium tube that produces more power, more tone, and higher fidelity with an extended dynamic range. All Ruby output tubes are labeled on the base...Click To Read More About This Product

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Quartet  
  • Quartet

    $39.99 Top Rated

    In stock

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  • Duet

    $21.99 Top Rated

    In stock

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OVERVIEW

The most powerful EL84CZ available!

A premium tube that produces more power, more tone, and higher fidelity with an extended dynamic range. All Ruby output tubes are labeled on the base with the exact matching measurements for plate current and transconductance. By matching these parameters, optimal performance and long life are ensured. Comes with a 6-month replacement warranty.

FEATURES
  • Labeled with matching measurements for plate current and transconductance
  • Optimal performance and long life
Reviews
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Review Snapshot

by PowerReviews
RubyEL84CZ Premium Matched
 
4.3

(based on 12 reviews)

Ratings Distribution

  • 5 Stars

     

    (7)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (2)

  • 1 Stars

     

    (0)

86%

of respondents would recommend this to a friend.

Pros

  • Improves sound (4)
  • Easy to use (3)
  • Good quality (3)

Cons

No Cons

Best Uses

No Best Uses
    • Reviewer Profile:
    • Experienced (4), Professional musician (4)

Most Liked Positive Review

 

Ruby EL84CZ = JJ EL84

First, the RUBY EL84CZ set received are actually JJ labeled tubes with RUBY providing their matching/grading. I needed a set for my Fender PRO JR that original Sovtek's had drifted apart by 30%...Read complete review

First, the RUBY EL84CZ set received are actually JJ labeled tubes with RUBY providing their matching/grading. I needed a set for my Fender PRO JR that original Sovtek's had drifted apart by 30% and were mechanically noisy (rattling). I had researched these RUBY tubes and knew they are actually JJ's and that was fine with me. The set received were perfectly matched (within 1ma) of each other. She is much quieter now with the new Ruby's vs. the worn Sovteks.

VS

Most Liked Negative Review

 

What am I supposed to do with this!!!?

The word that keeps coming to mind is UNINSPIRING. Tried in a Pro Junior and Mesa Boogie Maverick, the tube didn't have the SLIGHTEST bit of clarity. You can tell it is a...Read complete review

The word that keeps coming to mind is UNINSPIRING. Tried in a Pro Junior and Mesa Boogie Maverick, the tube didn't have the SLIGHTEST bit of clarity. You can tell it is a well MADE tube- no undue compression and it had solid low end, but that's where the compliments stop. The tube made each amp (while using humbuckers, P-90's, Tele, and Strat pickups) sound like it was clogged up in the all-important mids- not much of a value. I'm going with the Electro-Harmonix offering.

Reviewed by 12 customers

Displaying reviews 1-10

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(5 of 6 customers found this review helpful)

 
2.0

What am I supposed to do with this!!!?

By ShortS1900

from Nashville, TN

Comments about Ruby EL84CZ Premium Matched:

The word that keeps coming to mind is UNINSPIRING. Tried in a Pro Junior and Mesa Boogie Maverick, the tube didn't have the SLIGHTEST bit of clarity. You can tell it is a well MADE tube- no undue compression and it had solid low end, but that's where the compliments stop. The tube made each amp (while using humbuckers, P-90's, Tele, and Strat pickups) sound like it was clogged up in the all-important mids- not much of a value. I'm going with the Electro-Harmonix offering.

(3 of 4 customers found this review helpful)

 
2.0

poor quality control-average sounding

By bluerush33

from md

About Me Professional Musician

See all my reviews

Ask me a question

Verified Buyer

Pros

  • Easy To Use

Cons

  • Not Functional
  • Poor Quality

Best Uses

    Comments about Ruby EL84CZ Premium Matched:

    i received the tubes defective. When i put them in a blues jr. every time i started the amp a loud, high-pitched squeal was produced and then died. and at any volume that could be used for a band practice the amp would start to produce the same squeal, very different from anything i've heard from an amp. i put back in the old tubes and i could not reproduce the noise. so i believe there is a short or something inside the tube. go buy ehx tubes they seem to be consistent for me at least and a better sound.

    (2 of 2 customers found this review helpful)

     
    4.0

    ruby el84 tube swap

    By plexibill

    from metro detroit area

    Comments about Ruby EL84CZ Premium Matched:

    i swapped a ruby el84 tube for the sovtek el84 that came in my epiphone valve junior amp. what an absolute step up ! louder volume, clean/crisp tone. if u have an EVJ do yourself a favor and put in of these smokin' hot tubes

    (2 of 2 customers found this review helpful)

     
    5.0

    fantastic

    By Anonymous

    from Undisclosed

    Comments about Ruby EL84CZ Premium Matched:

    Well, I had to replace the old tubes in my Marshall, so i got this. I was entirely satisfied. I noticed the volume of my amp drastically increased. They can get a really good sound, I'm sure there are better, but this tube is solid.

    (1 of 1 customers found this review helpful)

     
    5.0

    Ruby EL84CZ = JJ EL84

    By Budacus

    from Raleigh, NC

    About Me Experienced

    See all my reviews

    Ask me a question

    Verified Buyer

    Comments about Ruby EL84CZ Premium Matched:

    First, the RUBY EL84CZ set received are actually JJ labeled tubes with RUBY providing their matching/grading. I needed a set for my Fender PRO JR that original Sovtek's had drifted apart by 30% and were mechanically noisy (rattling). I had researched these RUBY tubes and knew they are actually JJ's and that was fine with me. The set received were perfectly matched (within 1ma) of each other. She is much quieter now with the new Ruby's vs. the worn Sovteks.

     
    5.0

    Excellent value

    By Steve

    from Hebron, MD

    About Me Experienced

    See all my reviews

    Verified Buyer

    Pros

    • Good Quality
    • Improves Sound

    Cons

      Best Uses

        Comments about Ruby EL84CZ Premium Matched:

        Great sound. Much better than the stock groove tubes in my blues junior. One of the stock gt's blew after minimum use. Doesn't matter that they are jj's with ruby labels. Better warranty than any competitors.

         
        4.0

        These Ruby El84C Vacuum Tubes

        By Tubeblues

        from Alabama

        About Me Professional Musician

        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 Ruby EL84CZ Premium Matched:

          These are good tubes. the main thing for young guitarists using tube amps is to learn that all tubes are not the same 3 place in the world make tubes. Modern Tube Manufacturing have come a long way to get good live and low noise. Always ensure the Amplifier is cooled before taking off stage right into cold weather. If a fuse is blowing you probably have a bad tube. Other wise I have good 30 hours of play with these and no issues they are consistent in quality.

           
          5.0

          Can't be beat for the price

          By cclarry

          from Redford, MI

          About Me Professional Musician

          See all my reviews

          Ask me a question

          Verified Reviewer

          Pros

          • Improves Sound

          Cons

            Best Uses

            • Backup
            • Concerts
            • Practicing

            Comments about Ruby EL84CZ Premium Matched:

            I bought these to replace the stock tubes in my Hughes & Kettner Grandmeister 36 and they are a definite improvement. The ones I received were not "rebranded" JJ's, but were Ruby Tubes. They are fatter, tighter, warmer, and slightly higher output than the stock Chinese Tubes.
            Very happy for this price!

             
            5.0

            Great Tubes!

            By Mikeyp

            from Carlsbad, ca

            About Me Professional Musician

            Verified Buyer

            Pros

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

            Cons

              Best Uses

              • Concerts

              Comments about Ruby EL84CZ Premium Matched:

              My first quad finally started going bad after about 4 yrs of use.
              My amp runs hot on tubes... cathode baised.
              So I feel they did extreamly well...too last that long.
              So I purchased the same Ruby Quad.

               
              5.0

              Do the job well

              Comments about Ruby EL84CZ Premium Matched:

              I've always had good experiences with Ruby tubes. Sounds good and reliable.

              Displaying reviews 1-10

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