PC Equalizer is a Graphical User Interface for "Equalizer APO" which is a parametric / graphic equalizer for Windows. Designed for those who are looking for fixed frequencies equalizer, offering a quick and easy audio filtering with ability to control left-right channels (Stereo, Mono, Swap, Invert, Balance...etc), Expand or contract Stereo using Pan\Expand processing feature. You can create effects using Multi-Delays feature e.g. Echoes, Delays, Reverb & many others. Also you can assign a preset to a program such as (Rock preset with Winamp, Classic preset with Windows Media Player, or Pop preset with PotPlayer...etc).