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A·01 System-wide equalizer v1.0.29 · HAL DRIVER
macOS · Core Audio Audio instrument

Your music, your games, your calls. The way they should sound.

A system-wide equalizer for macOS. A native audio driver intercepts everything your Mac plays and gives you full control: 10 bands, spatial audio, professional presets, and recording. No perceptible latency, no telemetry, free to start.

Works with Sonoma · Sequoia · Tahoe · Apple Silicon + Intel

10
parametric bands
29
presets
< 5 ms
latency
48 kHz
32-bit float
Technology Native
SwiftSwiftUICCore AudioHALIPC
Latency < 5 ms imperceptible to the ear
Privacy 0 data everything is processed on your Mac
Real-time audio engine 48 kHz · zero telemetry
B·02 Audio engines 4 modules · real time

Four engines. One app.

All processing runs on your Mac, in real time.

B·02·a hal driver

System-wide equalizer

Intercepts all macOS audio with a native HAL driver written in C.

  • 10 parametric bands
  • 7 filter types
  • Software processing
  • No app restarts
Core AudioHALIPC
B·02·b 4096 fft

Spectrum analyzer

Real-time visualization with professional resolution.

  • 4096-point FFT
  • 2048 bins
  • Hann window
  • 160 dB dynamic range
vDSPAccelerate
B·02·c 29 presets

Professional presets

Curves calibrated for 12 audio systems and 10 genres.

  • Bose, Sonos, JBL, Harman…
  • Rock, Jazz, Hip-Hop…
  • Gaming, movies, podcasts
  • Night profile
Harman Target
B·02·d 9 rooms

Spatial audio

Convolution reverb with 9 acoustic spaces.

  • Small room → cathedral
  • Dry/wet mix 0–100%
  • No coloration
  • Instant bypass
ReverbDSP
C·03 Control panel 12 features

All the control, in a single window.

Every feature an audiophile would ask for, built into an interface that stays out of your way.

01 eq

Stereo EQ

Equalize the left and right channels independently, or link them with one click.

link · copy · swap
02 ui

3 EQ modes

Basic with three knobs, advanced with ten bands, expert with full parametric control.

basic · advanced · expert
03 dynamics

Volume boost

Push up to 150% with a built-in limiter that protects your ears and your speakers.

up to 150% with limiter
04 plugins

Audio Unit plugins

Load your favorite AU plugins into an effects chain with per-plugin bypass.

05 capture

Audio recording

Capture system audio as WAV, M4A, or AIFF at 48 kHz.

WAVM4AAIFF
06 capture

Screen recording

Record your screen with dual system and mic audio in H.264 at 60 fps.

H.264 · 30/60 fps · dual audio
07 monitor

App monitor

See which app is playing and adjust its volume independently.

08 input

Global shortcuts

Eight configurable keyboard shortcuts so you never drop what you are doing.

8 configurable shortcuts
09 window

Floating window

Work from a menu bar popover or an always-on-top window.

menu bar popover
10 routing

Output devices

Switch from speakers to headphones without cutting the audio.

hot swap
11 input

Virtual microphone

Apply your equalization to the voice that goes out on video calls.

EQ applied to your voice
12 theme

Adaptive theme

Automatically matches macOS light or dark mode.

automatic light / dark
D·04 Remote control port 33773 · pro
Local HTTP API Pro

Control ZonaReq from your terminal.

A local REST API with Bearer token auth and a built-in web panel. Automate your EQ, trigger presets from a Stream Deck, or wire it into your own scripts.

port
33773
auth
bearer token
endpoints
15
panel
web included
zonareq ~ http api
live
·
# the local api runs on port 33773
$
curl localhost:33773/api/status
driver hal · running · 48000 hz
eq enabled · preset: harman target
apps: spotify · arc · discord
$
curl -X POST localhost:33773/api/eq/band
·
-H "authorization: bearer ••••••••"
·
-d { "index": 0, "gain": 6.0 }
band 32hz set +6.0 dB · applied < 5ms
$
E·05 Stem separation Demucs v4 · 100% local
Pro · Local

Split any song into its stems.

Isolate vocals, drums, bass, and other instruments right on your Mac. No cloud: your music never leaves your machine.

Demucs v4Core ML100% local~5 s
F·06 Specifications engineering under the hood

Engineering under the hood.

Requirements

03
  • macOS 14 Sonoma+
  • Apple Silicon or Intel
  • ~112 MB on disk

Audio engine

05
  • HAL driver in pure C
  • 48 kHz · 32-bit float · stereo
  • 4096-frame buffer
  • Lock-free ring buffer
  • Anti-drift ASRC

Security and privacy

04
  • Notarized by Apple
  • Signed with Developer ID
  • Zero telemetry
  • Audio processed locally
G·07 Licenses secure checkout with Stripe

Pick how you pay. The features are the same.

Start free. Every paid plan unlocks the full ZonaReq: only the billing changes.

Free
$0 USD

3-band EQ and 5 basic presets to try it out.

Monthly
$4.99 USD
/ month

Everything in Pro, flexible. Cancel anytime.

Annual Recommended
$29 USD
/ year

Everything in Pro. Save ~50% vs monthly.

Lifetime
$59 USD
one-time payment

Pay once. Yours forever, no renewals.

Teams
$199 USD
one-time · up to 10 Macs

For studios and families. One license, several Macs.

Every paid plan includes

  • 10-band parametric equalizer
  • 29 professional presets
  • Spectrum analyzer
  • Reverb and spatial audio
  • AU plugin host
  • Audio and screen recording
  • Stem separation
  • HTTP remote control
  • Web panel and HTTP API

Secure checkout with Stripe

Subscriptions can be canceled anytime. One-time purchases never renew. Prices in Mexican pesos for Mexico and US dollars everywhere else.

Already bought? Recover your license →
H·08 Download v1.0.29 · notarized dmg

Your Mac already has an equalizer. It was just missing ZonaReq.

Available for macOS Sonoma and later. Start with the free version and unlock Pro whenever you want.

Download free

v1.0.29 · macOS 14+ · Apple Silicon · ~112 MB · notarized DMG

Download for Intel

Is your Mac Intel-based? This edition is optimized for Intel and does not include stem separation, which requires Apple Silicon.

Intel edition · macOS 14+ · x86_64 · notarized DMG

I·09 License recovery support

Lost your license?

Enter the email you purchased with and we will resend your key within minutes.