The best alternative to FxSound is Equalizer APO, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 10 alternatives to FxSound and eight of them are so hopefully you can find a suitable replacement. Other interesting alternatives to FxSound are Peace Equalizer, SteelSeries GG, Breakaway Audio Enhancer and Nahimic.
Equalizer APO is a parametric / graphic equalizer for Windows. It is implemented as an Audio Processing Object (APO) for the system effect infrastructure introduced with Windows Vista.
Peace equalizer is a Windows PC interface for Equalizer APO . Besides an system-wide equalizer on your Windows PC, Peace has an effects panel for balance, crossfeeding, delay, etc., a graph window and much more.
SteelSeries GG is a platform that helps you connect with your gear and people. It bundles all the SteelSeries apps into one simple platform. Use it to clip, tune, set up, and share your gaming moments. Some of the apps that you can use: sonar, moments, 3D Aim Trainer, engine.
Breakaway Audio Enhancer dramatically improves the quality of the listening experience by digitally remastering audio in real-time with the same technology used by the pros in the music and broadcast business.
3D audio software Nahimic is compatible with a list of computers and motherboards from different partners as MSI and Gigabyte/Aorus embedding a 8th Gen. Intel Processor.
NOVA is a parallel dynamic equalizer. Appearing in the familiar layout of a parametric equalizer, each band also includes a full featured dynamics section allowing the processor to cover an impressively wide range of applications.
VST plugin not a stand alone audio enhancer
PulseAudio Equalizer is a 15 bands system wide equalizer, that means any application that is using PulseAudio, will benefit from the sound improvement.
Sound Booster allows you to boost volume of a web browser, a media player, a game or any other Windows programs that play sounds. Sound Booster amplifies sound in real-time and there is no need to configure it.
This is only volume booster software
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A little complex to use, but the only real alternative to fxsound