What are some alternatives?
When comparing Spatial Sound Card and ViPER4Windows, you can also consider the following products
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.
Breakaway Audio Enhancer - Breakaway Audio Enhancer dramatically improves the quality of the listening experience by digitally...
Boom 2 - Boom is a simple volume booster that lets you boost the volume of your Mac and your music files.
Bongiovi DPS - Instantaneously correct, improve and optimize the sound of any computer system with Bongiovi DPS.