You can adjust these audio settings to improve the audio quality. The great thing about Equalizer APO is that it provides users with many audio settings. Equalizer APOĮqualizer APO is an open-source audio equalizer available for the Windows operating system. So, it’s one of the best audio equalizers you can use today.

The tool provides many sound presets like 3D Surround, higher fidelity, dynamic gain boosting, booming bass, etc.