Virtually unlimited number of filters and works on any number of channels!

Equalizer APO (32-bit)

Equalizer APO 1.0 (32-bit)

  -  6.33 MB  -  Open Source

Sometimes latest versions of the software can cause issues when installed on older devices or devices running an older version of the operating system.

Software makers usually fix these issues but it can take them some time. What you can do in the meantime is to download and install an older version of Equalizer APO 1.0 (32-bit).


For those interested in downloading the most recent release of Equalizer APO (32-bit) or reading our review, simply click here.


All old versions distributed on our website are completely virus-free and available for download at no cost.


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  • Equalizer APO 1.0 (32-bit) Screenshots

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    Equalizer APO 1.0 (32-bit) Screenshot 1
  • Equalizer APO 1.0 (32-bit) Screenshot 2
  • Equalizer APO 1.0 (32-bit) Screenshot 3

What's new in this version:

- Added: Configuration Editor, which allows to edit configurations in a graphical user interface. Contains GUIs for most commands supported by E-APO, but as lines can also be edited directly, all commands can be used
- Added: Command "GraphicEQ", which can act as a regular, fixed-band graphic equalizer (via the GUI) but also supports variable bands so that any desired frequency response can be specified. Internally, it is implemented via convolution with a generated IR
- Added: Command "Convolution", which allows to convolve the signal with a user-provided impulse response to achieve e.g. equalization or reverberation effects
- Improved: Configurator performs checks for registry values that are needed for the operation of E-APO, which may be changed by driver installations, fixing the values if necessary
- Improved: Configurator shows which is the default device as a hint to the user
- Improved: Parametric filter calculations (command "Filter") are now fully using double precision. This yields a great improvement in signal-to-noise ratio for practically no performance penalty