Equalizer APO is an open source parametric graphical equalizer for devices that run the Windows operating system. Equalizer APO was developed by Jonas Thedering. It was released under GNU General Public License version 2.0 (GPLv2). Equalizer APO allows users to add an unlimited number of filters to their audio devices and enhances the output sound. It can work on any number of channels and Equalizer APO is best used in combination with Room EQ Wizard. This website has no affiliation with the original developer and users should only use this website as a guide.
License Information: GNU Lesser General Public License