VLC Media Player - VLC is a free and open source cross-platform multimedia player and framework.
FxSound - Clearer Sound for Your PC. The new FxSound boosts your sound quality, volume, clarity and bass.
AIMP - AIMP : Free Audio Player : Официальный сайт программы
Equalizer APO - A system-wide equalizer for Windows 7 / 8 / 8.1 / 10 with channel remapping/copying capabilities
foobar2000 - An advanced freeware audio player for the Windows platform.
Boom 3D - Audio enhancer with 3D surround sound