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Groove Tubes

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The Groove Tubes GT-EL84-S matched power tube duet and quartet exhibits many of the same characteristics as the EL34, but with a power output of roughly 5-8 watts. Very creamy and smooth, these EL84's are a perfect upgrade for the stock EL84 tubes that come in many modern amps. Great for recording and rehearsal, these power tubes deliver a soft and tactile touch, rich harmonic response and pleasingly musical top end. The GT-EL84-S tends to be a little more aggressive and edgy when pushed into overdrive. This version is a little brighter, but still has a smooth top end.
Groove Tubes Gold Series GT-EL84-S Matched Power Tubes Medium (4-7 GT Rating) Quartet

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Country of origin: Slovakia

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Country of origin: Slovakia

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4.63

8 Reviews

100%

of respondents would recommend this to a friend

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Best Uses
  1. Concerts1
  2. Practicing1
  3. Music enjoyment1
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  1. Experienced2
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Pros
  1. Good Quality4
  2. Easy To Use3
  3. Improves Sound3
  4. Functional2

Reviewed by 8 customers

  • Perfect in 20watt amp!

    5

    Verified BuyerVerified Buyer

    submitted5 years ago

    bymrhDallas

    fromDallas, TX

    Great tone - warm lows, but plenty of "whack 'em" as you push up the gain...

  • Great Tubes!

    5

    submitted5 years ago

    byWoody

    fromDC

    Great tubes, use them all the time!

  • Outstanding tone reliability and quality.

    5

    Verified BuyerVerified Buyer

    submitted7 years ago

    byPrsguy

    fromAtlantic City, nj

    Outstanding power tubes! Great reliability and tone!

  • Great

    5

    Verified BuyerVerified Buyer

    submitted7 years ago

    byDaniel

    fromundisclosed

    I needed the item right the way and could pick it up in the next day of the on line purchase. Customer service was great and the tube works perfectly.

  • Nice smooth sounding good quality tubes.

    5

    submitted8 years ago

    byDean

    fromRichmond Texas

    In my Antique Sound Labs headphone amp these tubes were a massive improvement over the Sovtek EL84 tubes. To me these tubes have great response, with warm tone. Bass wasn't boomy at all like I experienced with the Sovtek EL84. I wish I could compare these to the Sovtek EL84M but alas I do not have them. The Groove Tubes I have are the 7 rated ones that have normal or medium distortion.

  • Awesome sound

    5

    submitted11 years ago

    byRicky White

    fromPelham, AL

    When I had to replace the tubes in my Crate V30 combo amp, I replaced with inexpensive tubes. The sound was very bright and I couldn't compensate enough with my amp eq. It was either overly bright or muddy. Replaced the tubes again with groove tubes(the same type that was in the amp originally) and man, what a difference. Love my amp's tone again. The groove tubes cost a lot more, but there were definitely worth the price. Very smooth sound.

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Have a question about this product? Our expert Gear Advisers have the answers.

  • submitted5 months ago

    asked byChris

    fromHuntley, Il

    Any chance these will work in place of 7189a?

    Any chance these will work in place of 7189a?

    Open Reply - Gear-Support
    That depends; the 7189 is designed for circuits operating in the 400 volt range. The EL84 is designed for the 300 volt range.

  • submitted2 years ago

    asked byDave

    fromHull MA

    Does this include 1 or 2 tubes?

    Does this include 1 or 2 tubes?

    Open Reply - Thomas
    2

  • submitted3 years ago

    asked byRich

    fromFort Worth, Tx.

    are (1-3) available instead of 7s? Also, are single tubes available? I only need one. If I buy a duet, will one of those work as a single?

    are (1-3) available instead of 7s? Also, are single tubes available? I only need one. If I buy a duet, will one of those work as a single?

    Open Reply - Thomas
    Unfortunately, no. Yes

  • submitted4 years ago

    asked byMatthew

    fromfort knox kentucky

    does it come with one or two tubes

    does it come with one or two tubes

    Open Reply - Beau
    This is a duet, so it comes with two tubes.

  • submitted4 years ago

    asked byMatthew

    fromfort knox kentucky

    Does it include one or two tubes. fixing antique radio.

    Does it include one or two tubes. fixing antique radio.

    Open Reply - Beau
    This is a duet, so it comes with two matched tubes.