Advanced users who want to fine-tune every frequency or use VST plugins.
For those who want total technical control, Equalizer APO is a professional-grade, open-source system-wide equalizer. Because its base interface is complex, most users install the on top for a more friendly experience.
One-click volume boost and specialized presets for gaming, music, and movies.
Practically unlimited filters and extremely low system resource usage. Download: Find it on SourceForge . 3. Letasoft Sound Booster: Pure Volume Power