Equalizer APO is a powerful, open-source parametric equalizer for Windows that operates at the system level. By integrating directly into the audio driver infrastructure, it allows you to apply unlimited filters, manage multichannel audio, and use VST plugins across all your applications. It is exceptionally lightweight and provides low-latency performance, making it the go-to solution for correcting acoustic issues, enhancing headphone frequency response, or fine-tuning your overall system audio experience without heavy CPU usage.
