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AE400 Active EQGet Demo Buy HD Buy Native

The AE400 is made up of 4 bands of fixed and active equalization. Each band is completely overlapping with all other bands and has its own Q (bandwidth), fixed gain, and active gain controls. A key filter for each band allows the active gain response to be as selective or broad as needed, based on the Q (bandwidth) control. Each band can use the input signal or selected side chain signal to trigger the active EQ response.

The active EQ bands can be controlled via the response plot itself, or from the text readouts above and below the response plot. The AE400’s active EQ response is determined by each band’s threshold, attack and release settings. Additionally, a ratio control determines input signal level sensitivity to further articulate how the active EQ will reach maximum active equalization – a feature unique to the AE400.

Peak signal text readouts for each active EQ band’s key signal allow quick setup of each band’s active EQ threshold, and are located underneath band dynamics plots. Input and Output controls, individual band bypass, band control linking, and band key signal monitoring round out the features of the AE400.


  • Four fully overlapping fixed and active EQ bands
  • Independent control over all active EQ parameters per band
  • Unique active EQ ratio response control
  • Side chain support
  • Double precision processing
  • Ultra low latency
  • Mono and stereo versions
HD v6: AAX DSP/Native, AU, VST
Native v6: AAX Native, AU, VST

Learn about the incredibly powerful, flexible, and unique aspects of the AE400 Active EQ by McDSP.

Mick Guzauski (Daft Punk, Pharrell, Eric Clapton) shows how he uses AE400 to tame female vocals.

Dave Pensado (Beyoncé, Pink, Usher) goes over his new favorite EQ, the AE400.

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    Pro Tools Expert

    “…This is a really, really, lovely equalizer, especially to use on busses and mix busses.

  • AE400 review

    Sound on Sound

    In the review period, I found plenty of uses for AE400, and in some cases, it allowed me to do something that simply wouldn’t have been possible with any other plug-in I know of.”

  • AE400 review

    Quanta Brasil

    Product specialist Kalunga from Quanta reviews the AE400 in Portuguese.

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    Colin’s Corner

    Founder of McDSP talks about product design, implementation and all of the nitty gritty features in each product. Learn to be a power user of AE400 by reading the article here

  • scheps

    Andrew Scheps (Black Sabbath, Red Hot Chili Peppers, Adele)

    “It’s magic.”

  • AE400 review

    Live Sound

    Live sound engineer Eddie “El Brujo” Caipo (Enrique Iglesias, Taio Cruz) shares his tricks for AE400.

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    Pairs Well With…

    6030 Ultimate Compressor gives you 10 different compressor models to add to your active equalization.

  • Save With A Bundle

    Whether it’s the Classic Pack, Emerald, or Everything Pack, save more money when you buy a bundle!