Apps similar to Equalizer APO include FxSound, which is free and open source. Other options are EasyEffects, Audio Hijack, MixDesk X and SteelSeries GG. Sound Equalizers like Equalizer APO are a crowded field, with more than 25 alternatives for Windows, Android, Mac, Linux and iPhone.
To start off there is really no "free" and/or "open source" alternative to Wavelet and Poweramp EQ that pairs the full DynamicsProcessing API with real audio-visual feedback, and I felt like after using both of those apps among other various EQ apps that...
EQ any audio you find on the web, live! Crank the bass, dim the highs, up the vocals: all with Ears!
Floating control enables seven sub-minimum volume levels, down to 30 dB below hardware floor, for finer quiet listening. Drag, minimize, and close overlay as needed; no ads, no account, no internet, open source, and does not interfere with buttons or panels.
The Equalizer Pie works starting from Android Pie. Aplication lets you adjust the frequency envelope of the sound with 14 bands to enjoy music. Adjust audio balance between channels.
SoundScout is an online platform offering sound tests for headphones and speakers. It is designed for audiophiles and music enthusiasts who want to ensure their audio devices are functioning optimally. The website provides tools like the Stereo Sound Test to check the stereo...
Mexico
Sonora sits between macOS and its output, so music, films, games, calls and browser audio all pass through the same ten-band equalizer. There is nothing to set up app by app, and no plugin to install: it is not a VST or an AU, and it needs no DAW.
Switzerland
Splitwave is a node-based audio router for macOS, Linux, and Windows. Wire microphones, system audio, per-app capture, and WAV files into a visual graph, run them through a chain of effects — EQ, compression, reverb, limiting, and more, plus your own CLAP, VST3 and AU plugins —...
Maxi SoundSet is an open-source, lightweight Windows audio leveler and equalizer built with Rust and the Slint UI framework. It dynamically stabilizes erratic volume jumps between quiet dialogue and loud action scenes in real time with near-zero latency.
