What are some alternatives?
When comparing Hesuvi and Breakaway Audio Enhancer, you can also consider the following products
ViPER4Windows - ViPER4Windows is an “APO”. APO stands for “Audio Processing Object”. APO is designed by Microsoft.
Letasoft Sound Booster - Boosts sound volume above maximum level
Equalizer APO - A system-wide equalizer for Windows 7 / 8 / 8.1 / 10 with channel remapping/copying capabilities
Dolby Home Theater - Dolby Home Theater v4 delivers a surround sound experience through a PCs built-in speakers, any pair of headphones, or a connected home theater system.
Boom 2 - Boom is a simple volume booster that lets you boost the volume of your Mac and your music files.
Spatial Sound Card - Upgrade your Headphones to 5.1 surround sound for free. Includes Volume BOOST!