Pro Expander


Expand, gate, and duck signals easily

Give your mix more energy while eliminating noise with the Pro Expander AAX plug-in, a unique high-quality expander that features SMART technology—and delivers exceptional sound quality and DSP efficiency. A sibling to the Pro Compressor, Pro Expander is based on the Avid Channel Strip plug-in, which emulates the coveted dynamics characteristics of the renowned Avid System 5 console. Pro Expander goes even further, enabling you to quickly expand, gate, and duck signals with the utmost precision.

Pro Expander offers a wide range of easy-to-use features and improvements that go way beyond what you can do with the Avid Channel Strip plug-in, plus some unique features not found in the Pro Compressor. Plus, Pro Expander is AAX DSP optimized, so you can handle massive Pro Tools | HDX mixes with ease.

Pro Expander is included with the Pro Tools | HD All Access Bundle and requires an Annual Upgrade and Support Plan for Pro Tools | HD to access and use.


  • Look ahead mode

    Prevent the gate from cutting into the attack of upcoming audio signals, with up to 15 ms of “look ahead” time

  • Upward mode

    Increase the dynamics of the audio signal and use it creatively in combination with steep Q side-chain filter settings or an external key input to selectively modify parts of the frequency spectrum or re-emphasize the rhythm of the composition

  • Ducker

    Emulate radio programming easily with this advanced ducker mode, which uses its own dedicated detector and optimized algorithm for smooth audio level changes.

  • Q with side-chain control

    Target offending frequencies with ease to set up a de-esser, plosive remover, and more.

  • Mix

    Blend the expanded sound with the unprocessed input for creative sound design, making parallel expansion easier than ever.

  • PPM metering

    Get a more precise and responsive read on highly transient audio material.

  • Solo

    Isolate just the gain reduction part of your audio material, get a better understanding of what’s being compressed, and adjust settings accordingly.

  • Front/rear linking mode Work with surround sound material more easily and link channels for more consistent level management.

System requirements

 OS Windows 8, Windows 7 
 OS Mac OS 10.11.x, Mac OS 10.10.x, Mac OS 10.9.x, Mac OS 10.8.x. Mac OS 10.7.x 
 Pro Tools Pro Tools 12.x, Pro Tools 11.x, Pro Tools 10.x  
 Copy Protection Requires iLok2 


 AAX Native 64
 AAX AudioSuite 64
 AAX Native 32
 AAX AudioSuite 32



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