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1A Equalizer

Tube based EQ for all use cases you ever think of
BUY NOW
1A Equalizer is On Sale! – $39 through March 31st!

Our Take

We never wanted to play by the rules, so we gave the old Pultec® some twist. Combining vintage schematics with modern technological know-how, we crafted the perfect Audified 1A Equalizer – where innovation meets tradition.
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Mid-Side Processing

Seize control over your soundstage with the Mid/Side (M/S) processing feature. M/S processing separates your audio into Mid and Side components, giving you the power to sculpt the center of your mix and the edges of the stereo signal separately. Forge your ultimate mix or master, and enhance your overall color with linkable parameters and switchable L/R and M/S modes.
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1A Equalizer in action

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Drums

Punchy drums are something everyone strives for. Add a bit of low-end boost to your kick and snare; your drums will sound much tighter and in-your-face.
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Guitar

Make your guitars more defined and cut-through. Add or remove the guitar’s low end as needed, or add a bit of chime and clarity on the top end.
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Bass

Enhance the bass’ groove by adding punch, weight, and definition. Boosting the lows and cutting the harsh highs will make your bass stand out.
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Boost

The old boost-and-attenuate trick is the most famous use of the unit. You will achieve perceived loudness and fullness by boosting a frequency and attenuating it slightly less than you boosted it.

Piece of history

When Eugene Richard Shenk created the unit in the 1950s, the original unique design changed the game. The original unit was used on countless hits from the 50s to today and will remain a staple in the music industry. We captured the essence and added our technical expertise and audio engineering experience on top. Our technology and love for tube-based devices come across in our plugins and studio work and keep being an endless inspiration for creating tools for musicians worldwide. So don’t think about 1A EQ as an “exact replica” (as if there is such a thing) – think about it as an homage and evolution.

Plug-in Walkthrough

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Essential Resources

System Requirements

Mac

• Comes in: VST3 64b, AAX 64b, AU 64b
• Apple Silicon Native
• macOS 10.11 and newer
• 120 MB of disk space
• ​At least 4GB of memory
Windows

• Comes in: VST3 64b, AAX 64b

• Windows 7 and newer
• 120 MB of disk space
• At least 4GB of memory
Documents

​Read me
Download PDF

Manual
Download PDF

​ 
Release Notes
Download PDF
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1A Equalizer
BUY NOW
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 © 2025 Eleven Dimensions Media, LLC. All rights reserved.
  • ABOUT
  • PRODUCTS
    • Auro 3D Audio
    • BOME >
      • BOME Network Pro
      • MIDI Translator Pro
      • BOME Box
    • ESI Audiotechnik >
      • USB Audio Interfaces >
        • UGM192
        • MAYA22 USB
        • MAYA44 USB+
        • U24 XL
        • Gigaport eX
        • U22 XT
        • U22 XT cosMik Set
        • U86 XT
        • U108 PRE
        • U168 XT
        • Dr. DAC nano
      • Network Audio Interfaces >
        • planet22x
      • PCIe Audio Interfaces >
        • MAYA 44 eX
      • Mobile Accessories >
        • cosMik Lav
        • MIDI nTour CX
      • MIDI Interfaces >
        • MIDIMATE eX
        • M4U eX
        • M8U eX
      • Studio Accessories >
        • cosMik uCast
        • cosMik 10
        • eXtra 10
        • MoCo
      • Monitoring Speakers >
        • aktiv 05
        • unik 05+
        • unik 08+
        • aktiv 10s
    • LIVELOOP >
      • LIVELOOP
    • PEACH AUDIO >
      • CUBE 5
    • Ploytec >
      • PL2
      • AROMA
      • ONE.2
    • PSI Audio >
      • STUDIO MONITORS >
        • A14-M V3 Studio
        • A17-M
        • A21-M
        • A23-M
        • A25-M
        • A215-M
        • A214-M
        • A125-M
        • A225-M
        • A226-M – NEW!
      • ACTIVE BASS TRAPS >
        • AVAA C214
        • AVAA C20
        • AVAA TECHNOLOGY
      • Accessories >
        • R&B Router & Bass Management
        • Metal Grill & Brackets
        • Gig Bags
    • reProducer Audio Labs >
      • Epic 4 Nearfield Studio Monitor
      • Epic 5 Nearfield Studio Monitor
      • Epic 55 Midfield Studio Monitor
    • Teknosign >
      • BOX LINE >
        • PEQ – Parametric Equalizer
        • MVC – Vari-Mu Compressor
        • DSMP – Dual Solid State Mic Preamp
        • SSMP – Solid State Mic Preamp
        • RPS – BOX Line Power Supply
        • PPS – 48 Volt Power Supply
        • SAM – Sum Adjust Mini
        • DIA – Dual Active DI Box
        • DIP – Dual Passive DI Box
        • DPS – Dual Mic Splitter
        • HPA – Headphone Amp
        • HUB – High Power USB Hub
        • MNB – Mini AC Line Conditioner (USA)
        • MNB – Mini AC Line Conditioner (EU)
      • Summing Amplifiers >
        • Sum Adjust Classic
      • Automixer
      • Patchbays & Adapters
    • Ultramixer
    • Zynaptiq >
      • Zynaptiq Software Bundles >
        • CREATE Bundle
        • REPAIR Bundle
        • MASTER II Bundle
        • ZAP Bundle V
        • The Mac Audio Apps Bundle >
          • TRIUMPH
          • LOOP EDITOR
          • MYRIAD
          • SPECTRE
      • INTENSITY 2
      • BALANCE
      • PUNCH
      • PITCHSHIFT
      • PITCHMAP::Colors
      • ORANGE VOCODER nano
      • ORANGE VOCODER IV
      • ADAPTIVERB
      • WORMHOLE
      • MORPH 3
      • UNMIX::DRUMS
      • UNVEIL
      • UNFILTER
      • UNCHIRP
      • PITCHMAP
      • TIME FACTORY II
  • COMMUNITY
    • Product Reviews
  • BUY