Alternatives to Equalizer APO
A system-wide parametric and graphic equaliser for Windows that hooks into the audio stack itself. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Equalizer APO
A system-wide parametric and graphic equaliser for Windows that hooks into the audio stack itself.
Replacements
Listings that take over the same core job as Equalizer APO.
Peace Equalizer
Control Equalizer APO through a graphical interface for Windows audio.
Peace Equalizer adds a graphical interface with presets on top of Equalizer APO, so it still requires Equalizer APO to be installed.
FxSound
Apply equalization and audio effects to Windows playback.
FxSound is also free and open source for Windows, offering presets and effects rather than unlimited parametric bands or Room EQ Wizard filter import.
Boom 3D
System-wide equalizer and 3D surround simulator for desktop and mobile.
Boom 3D is paid and closed source, also running on macOS, with a system-wide 31-band equalizer and 3D surround simulation.
Easy Effects
A rack of audio effects for PipeWire on Linux: equaliser, compressor, limiter, noise reduction and thirty more.
Easy Effects runs on Linux with PipeWire instead of Windows and adds around thirty effects including compressor, limiter and noise reduction.
ViPER4Android
System-wide audio processing engine for rooted Android.
ViPER4Android covers rooted Android devices instead of Windows, with a convolver that supports impulse responses for headphone correction.
eqMac
A system-wide audio equalizer for macOS with a per-app volume mixer and headphone presets.
eqMac moves to macOS as a freemium system-wide equalizer with headphone presets, closed source and with advanced features behind Pro.
Also worth comparing
These listings name Equalizer APO as their own alternative, so the relationship runs both ways.
MathAudio Headphone EQ
Headphone resonance correction plugin with a free foobar2000 component.
Equalizer APO is free and open source under GPL-2.0, applying headphone correction system-wide on Windows, but its native interface is a text configuration file.
Wavelet
Apply headphone equalization to supported Android playback sessions.
Equalizer APO is a free, open-source system-wide equaliser for Windows with unlimited parametric bands, though its native interface is a text configuration file.
Similar software
Related functionality, not a direct replacement.
Room EQ Wizard
Measure loudspeakers, room acoustics and audio equipment.
MathAudio Room EQ
Measure and correct room response through an audio equalization plug-in.
Toneboosters Morphit
Headphone correction plugin with a large library of measured headphone profiles.
Dirac Live
Room correction software that measures and optimizes speaker and headphone response.
SoundSwitch
Switch Windows playback and recording devices with hotkeys.