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JJ ECC83S / 12AX7 Preamp Vacuum Tubes (Matched)

JJ ECC83S / 12AX7 Preamp Vacuum Tubes (Matched)

4.9(41 ratings)

Best price now

$19.95at DuBaldo Music CenterChecked 1 h ago

Compared across 15 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Best price today: $19.95 at DuBaldo Music Center (checked Nov 12, 2026).
  • Checked at 15 stores.

    • Our take on the JJ ECC83S / 12AX7 Preamp Vacuum Tubes (Matched)

    The JJ ECC83S is a current-production 12AX7-type dual triode made in Slovakia, sold here as a matched, burned-in pair. It is the standard high-gain preamp tube for guitar amps, and JJ's version is known for a balanced midrange, smooth top end and low microphonics. Compared with New Old Stock 12AX7s and premium reissues, it costs far less and is consistent from batch to batch, though it is not as sweet or as long-lived as a good vintage Mullard or Telefunken. It suits players replacing worn preamp tubes, voicing a bright amp darker, or stocking spares.

    Best forGuitarists replacing worn preamp tubesTaming a bright or harsh ampBuying matched spares for gigging ampsTube mic and hi-fi preamp owners
    Pros
    • Balanced midrange with warm highs and a detailed low end
    • Low noise and microphonics for a high-gain tube
    • Matched and burned in before shipping
    • Consistent, widely available current production
    • Works in any 12AX7 / ECC83 socket
    Cons
    • Not as harmonically rich as good NOS tubes
    • Gain and character vary slightly from tube to tube
    • Shorter lifespan than vintage equivalents in heavy use
    • Some amps need rebiasing or gain-stage tweaks to hear the difference

    JJ ECC83S / 12AX7 Preamp Vacuum Tubes (Matched) prices at every store

    • DuBaldo Music CenterNew

      In stock

      $19.95Checked 1 h ago
      Visit DuBaldo Music Center
    • SweetwaterNew

      In stock

      $19.99Free shippingChecked 1 h ago
      Visit Sweetwater
    • Third Rock Music CenterNew

      In stock

      $26.99Checked 1 h ago
      Visit Third Rock Music Center
    • TubeDepotNew

      In stock

      $18.95+ $9.50 shippingChecked 1 h ago
      Visit TubeDepot
    • British AudioNew

      In stock

      $21.99+ $11.10 shippingChecked 1 h ago
      Visit British Audio
    • Amplified PartsNew

      In stock

      $17.95+ $27.00 shippingChecked 1 h ago
      Visit Amplified Parts
    • ReverbNew

      Availability unknown

      $20.93Checked 1 h ago
      Visit Reverb
    • Motor City GuitarNew

      Availability unknown

      $20.93Checked 1 h ago
      Visit Motor City Guitar
    • dougstubes.comNew

      Availability unknown

      $22.95Checked 1 h ago
      Visit dougstubes.com
    • The Guitar SanctuaryNew

      Availability unknown

      $24.95Checked 1 h ago
      Visit The Guitar Sanctuary
    • Sims MusicNew

      Availability unknown

      $26.99Checked 1 h ago
      Visit Sims Music
    • AmazonNew

      Availability unknown

      As an Amazon Associate, Deal.ai earns from qualifying purchases.

      $29.99Free shippingChecked 1 h ago
      Visit Amazon
    • Bananas.comNew

      Availability unknown

      $33.99Checked 1 h ago
      Visit Bananas.com
    • WM GuitarsNew

      Availability unknown

      $44.00Checked 1 h ago
      Visit WM Guitars
    • eBayNew

      Availability unknownSold by sweetwatersound

      $59.97Checked 1 h ago
      Visit eBay

    Also available at

    • Ruby TubesCheck price at Ruby Tubes

    Store links may earn us a commission.

    JJ ECC83S / 12AX7 Preamp Vacuum Tubes (Matched) price history

    Lowest price we've seen: $17.95 on Nov 13 at Amplified Parts. Tracked across 15 stores since Nov 13.

    What reviewers say

    • 4.9 / 541 ratings

    Owners rate these highly, praising quiet operation, matched pairs and a warm, balanced tone that cleans up harsh amps. A few note the tone is more neutral than vintage tubes and that gain varies a little between samples.

    What people mention
    • NoisePraisedOwners report very low hiss and microphonics, even in high-gain channels.
    • TonePraisedDescribed as warm and balanced, with a smooth top end and clear lows.
    • MatchingPraisedBuyers say the matched pairs arrive closely balanced and drop in without fuss.
    • Vintage comparisonMixedSome find them more neutral and less sweet than old-production 12AX7s.
    • Gain consistencyMixedA few note slight gain differences between individual tubes.

    About the JJ ECC83S / 12AX7 Preamp Vacuum Tubes (Matched)

    The JJ ECC83S / 12AX7 is a high-gain preamp double triode vacuum tube. It is designed to deliver harmonically rich sound with low noise and low microphonics.

    Its balanced midrange adds clarity and warmth in an amplifier. It gives a detailed low end and a warm high end.

    Each tube is tested, matched and burnt in before it is sold.

    Model
    JJ ECC83S / 12AX7
    Type
    Preamp vacuum tube, high-gain double triode
    Preparation
    Tested, matched and burnt in
    Sound
    Harmonically rich, balanced midrange, detailed low end, warm high end
    Warranty
    6 months

    Questions and answers

    Is this a direct replacement for any 12AX7 or ECC83?
    Yes. The ECC83S is a 12AX7-type dual triode and fits any socket wired for 12AX7, ECC83, 7025 or CV4004. Check that your amp's preamp stage expects that tube type.
    Do I need to rebias after swapping preamp tubes?
    Usually not. Preamp tubes are cathode-biased in most amps, so a swap is plug-and-play. Power tubes are the ones that need rebiasing.
    How does it compare with a vintage Mullard or Telefunken?
    The JJ is quieter and more consistent, but vintage tubes often sound richer and more three-dimensional. The JJ is the safer choice for gigging and high-gain amps.
    What does matched and burned in mean here?
    The pair is tested for gain and transconductance and run before shipping so it settles. That reduces early failures and keeps the two halves balanced.
    Will it make my amp sound darker?
    It tends to smooth bright, fizzy highs and firm up the mids. It won't transform a very bright amp, but many players use it for exactly that.
    How long do these tubes last?
    Preamp tubes typically last years in normal use, longer than power tubes. Heavy gigging and high-gain settings shorten that.
    Where is the JJ ECC83S / 12AX7 Preamp Vacuum Tubes (Matched) cheapest?
    At DuBaldo Music Center, for $19.95, as of our latest check.
    What do buyers say about the JJ ECC83S / 12AX7 Preamp Vacuum Tubes (Matched)?
    Rated 4.9 out of 5 from 41 ratings.
    Where can I buy the JJ ECC83S / 12AX7 Preamp Vacuum Tubes (Matched)?
    16 stores we checked sell it, including DuBaldo Music Center, Amazon, Amplified Parts, TubeDepot, Sweetwater.

    Stores we've priced the JJ ECC83S / 12AX7 Preamp Vacuum Tubes (Matched) at

    • Sweetwater deals and prices