ViPER4Windows is described as '“APO”. APO stands for “Audio Processing Object”. APO is designed by Microsoft. It n audio processing framework that can be loaded onto any sound card' and is a Sound Equalizer in the audio & music category. There are more than 10 alternatives to ViPER4Windows for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best ViPER4Windows alternative is FxSound, which is both free and Open Source. Other great apps like ViPER4Windows are Equalizer APO, EasyEffects, Peace Equalizer and eqMac 2.
Free and open-source software to boost sound quality, volume, and bass. Including an equalizer, effects, and presets for customized audio.
FxSound is the most popular Windows alternative to ViPER4Windows.
FxSound is the most popular Open Source & free alternative to ViPER4Windows.
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.
It doesn't provide any 3D effects, but allows much greater control. You can use different parametric filters and graphic equalizers, apply effects on selected audio channels and devices (even on microphones!), and use convolution with impulse response. You can also use as many of each effect as you can, with different settings and on different channels.
Almost everyone thinks Equalizer APO is a great ViPER4Windows alternative.
Easy Effects is an advanced audio manipulation tool. It includes an equalizer, limiter, compressor and a reverberation tool, just to mention a few. To complement this there is also a built in spectrum analyzer.
EasyEffects is the most popular Linux alternative to ViPER4Windows.
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.
eqMac 2 is the most popular Mac alternative to ViPER4Windows.
Maximize your Mac's audio output beyond default limits with a simple tool that enhances sound for movies, music, and web content. Improves Skype sessions, boosts music files, and syncs them to iPhone or iPod touch. Ideal for media enthusiasts looking to upgrade their sound experience.
Boom 2 is the most popular iPhone & iPad alternative to ViPER4Windows.
Boom 2 is the most popular commercial alternative to ViPER4Windows.
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.
Transforms audio by delivering immersive 3D surround sound, boosting volume, offering custom equalizer presets, wireless control, audio player, app-specific volume control, and more, with access to global radio stations and patent-pending technology ensuring comprehensive media enhancement.
Boom 3D is the most popular Android & Android Tablet alternative to ViPER4Windows.
ARISE puts together sound enhancements like VIPER4Android, Asus Zenfone 3 libraries with DTS effect, Huawei MedaiPad M2 Harman & Kardon sound effects, Huawei P9 sound libraries, Lenovo K3 Note MaxxAudio, LeTv Max 2 Dolby Atmos, Sony LDAC Bluetooth codec etc.
Elevates PC audio and delivers a surround sound experience through a PC's built-in speakers, headphones, or a connected home theater.
EQ any audio you find on the web, live! Crank the bass, dim the highs, up the vocals: all with Ears!
Razer Surround audio software features 7.1 virtual surround sound, personalized settings in the cloud and compatible with any stereo headphones. It also brings in EQ for music.
Razer surround does not offer any of the same functions unless paid for, you have listed it as free, it also does not provide IRS or proper volume boosting.
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Equalizer APO doesn't have the same functionality, it's just an audio equalizer software.