Equalizer APO is a parametric / graphic equalizer for Windows. It is implementedas an Audio Processing Object (APO) for the system effect infrastructureintroduced with Windows Vista.Features:- virtually unlimited number of filters- works on any number of channels- very low latency, which makes it suited for interactive applications- low CPU usage- modular graphical user interfaceRequirements:- Windows Vista or later (currently only Windows 7, 8, 8.1 and 10 have been tested)- Sound card driver must support APOs (this includes most onboard sound drivers)- The application must not bypass the system effect infrastructure(APIs like ASIO or WASAPI exclusive mode can not be used)Equalizer APO is best used in conjunction with Room EQ Wizard