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#212031 000000185

Ruby EL84CZ Premium Matched  Duet

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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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Duet  
  • Quartet

    $39.99 Best Seller

    In stock

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  • Duet

    $21.99 Best Seller

    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
 
4.2

(based on 10 reviews)

Ratings Distribution

  • 5 Stars

     

    (6)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (2)

  • 1 Stars

     

    (0)

80%

of respondents would recommend this to a friend.

Pros

No Pros

Cons

No Cons

Best Uses

No Best Uses
    • Reviewer Profile:
    • Experienced (3), Professional musician (3)

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 10 customers

Displaying reviews 1-10

Back to top

 
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.

       
      4.0

      Great tubes for the money

      By Ash

      from Cleveland, OH

      About Me Experienced

      Verified Reviewer

      Comments about Ruby EL84CZ Premium Matched:

      Replaced some very old JJ's with these. They are rebranded JJ's and sound slightly warmer, not as bright as the JJ's. A bit more mids and break up beautifully. For the price, these can't be beat.

       
      5.0

      Ruby EL84CZ

      By Tom Eddie

      from Fox Lake, Il

      About Me Experienced

      See all my reviews

      Comments about Ruby EL84CZ Premium Matched:

      Wanted a quad of JJs and this is the way to get that at MF. Got a cathode biased amp that is hard on output tubes. Ruby must test these good because they hold up. And they are JJs so they sound good. Me like. This is my second purchase of them.

      (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.

      (2 of 3 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)

         
        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.

        (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

        (4 of 5 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.

        Displaying reviews 1-10

        Back to top

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