Equalizer APO (beta)

Equalizer APO (beta)

Equalizer APO (beta)
Equalizer APO (beta)

Equalizer APO is a parametric / graphic equalizer for Windows. It is implemented as an Audio Processing Object (APO) for the system effect infrastructure introduced with Windows Vista.


  • virtually unlimited number of filters
  • works on any number of channels
  • very low latency, which makes it suited for interactive applications
  • low CPU usage
  • modular graphical user interface

  • Windows Vista or later (currently only Windows 7, 8, 8.1 and 10 have been tested)
  • Sound card driver must support APOs (this includes most onboard sound drivers)
  • The application must not bypass the system effect infrastructure
    (APIs like ASIO or WASAPI exclusive mode can not be used)

What I like the most about Pro Audio ?

Many people declare me insane when they see my two Stage Accompany (SA) Blue Box enclosures standing in my living room. They always ask me how my wife feels about these “monsters” taken so much place of our living room.

I know that the WAF (Wife Acceptance Factor) of the SA Blue Box is rather low so many women will prohibit their husbands to place such “monsters” in the living room. Fortunately my wife doesn’t care about the size of the enclosures as long as I’m happy she’s happy.

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