macOS · Native Swift · No Drivers
System-wide EQ.
No compromises.
16-band parametric equalizer for your entire Mac. Real biquad math, live spectrum analysis, zero kernel extensions.
// features
Built for the frequency
you actually hear.
iQualize captures all system audio via Core Audio Taps. Every app — music, video, browser — through the same curve. Shape once, hear everywhere.
Computed from Audio EQ Cookbook formulas — the same math AVAudioUnitEQ uses internally. The curve you draw is exactly what you hear.
Ghost line shows pre-EQ signal. Fill shows post-EQ result. Watch the curve reshape your audio in real time.
Core Audio Taps intercept system audio directly. No kernel extensions, no audio routing hacks. The cleanest possible signal path.
Save and share .iqpreset files. Drag bands freely. Precision to the Hz and tenth of an octave.
// interface
Luzifer's Void — live.
The actual preset loaded in iQualize. Massive sub foundation, excavated mids, climbing high presence.
// rendered approximation — not a screenshot
// presets
Presets for every room.
Saved as .iqpreset JSON files. Version control them, share them, derive them from hex magic numbers if you want.
Dark bunker techno. Massive sub, excavated mids, rising high presence. The floor shakes before you hear it.
0xDEAD owns the sub. 0xBEEF owns the presence. Dark techno derived from a 32-bit magic number.
Every frequency derived from bit-shifts of 0xDEAD and 0xBEEF. 20 bands. Zero taste involved.
Psytrance dissolution. Wide overlapping bands, sub warmth, gentle mid trough, oceanic high end.
Classic bunker shape. High shelf rolled off at 10k. No air, no shimmer. Berghain main floor at 4am.
Metalcore. Tight kick at 72 Hz, deep mid scoop, razor presence from 2.4k. Snare crack in the sternum.
// how it works
Three steps.
Then it's just there.
Lives in your menu bar. No system extensions, no audio device changes. Launch it and it's running. Quit it and it's gone without a trace.
Drag band nodes across the frequency response. Add up to 16 parametric bands anywhere from 20 Hz to 20 kHz. Spectrum shows you what's happening.
Spotify, YouTube, Final Cut, system sounds — everything through the same curve via Core Audio Taps. One EQ for your entire Mac.
// technical
No compromises
in the signal path.
Built on the same audio primitives Apple uses internally. The architecture works with the OS, not against it.
Open source.
No subscriptions.
MIT licensed. Build it yourself or download the release.
// iQualize — parametric EQ for macOS