Hesuvi - Hesuvi imitates the binaural sound effect of many surround virtualizations by making use of...
JamesDSP for Linux - An audio effect processor for PipeWire and PulseAudio clients.
DFX Audio Enhancer - Formerly known as DFX Audio Enhancer, FxSound Enhancer instantly boosts the sound quality of the music on your PC.
Equalizer Pie - Equalizer Pie is a free audio manipulation application for OS X.
Letasoft Sound Booster - Boosts sound volume above maximum level
Razer Surround - Razer Surround audio software features 7.