This repo contains a 64-bit port of EqualizerAPO - system wide equalizer for Windows. Standard Equalizer APO performs all sound processing using 32-bit float number. This is a modification of the processing engine that uses 64-bit double precision numbers instead. This increases fidelity especially with complex configuration files (like configurations generated by HeSuVi).

No functionality was added or modified. The source code is based on commit r73 of the original repo.

1. You will need standard Equalizer APO installed on your system.
2. Disable Equalizer APO for all audio devices.
3. Reboot your computer.
4. Unpack the attached zip archive into the Equalizer APO installation folder. Replace EqualizerAPO.dll. Please backup the original file before doing this.
5. Re-enable Equalizer APO and reboot. This will load modified 64-bit audio processing engine.

1. Disable Equalzier APO for all audio devices.
2. Reboot your computer.
3. Replace the EqualizerAPO.dll with the original backup you created when installing 64-bit version.
4. Re-enable Equalizer APO and reboot.