WaxOn / WaxOff

Podcast audio utility for macOS. Signal conditioning for ingest and broadcast normalization for delivery.

Download v2.2.4 Manual Theory of Operation GitHub

macOS 14+ · Apple Silicon (M-series) · Free

WaxOn

Ingest Prep

Use before you edit

Conditions guest recordings and raw captures for ingest. High-pass filtering, optional leveling and loudness normalization, and always-on true-peak limiting — outputs a 24-bit WAV ready for your DAW.

High-pass filter — On (80 Hz) · Off (20 Hz DC floor)
Phase rotation — optional 200 Hz allpass (default on)
Dynamic leveling — optional, for panel & multi-voice
Two-pass EBU R128 loudness normalization — optional (default off)
2× oversampled true peak limiting — fixed −1.0 dBTP

WaxOff

Delivery & Mastering

Use after you mix

Takes your finished mix to broadcast-compliant delivery. EBU R128 normalization, true peak control, and MP3 encoding in one step.

Two-pass EBU R128 — linear gain, no compression
Configurable true peak ceiling (−3.0 to −0.5 dBTP)
24-bit WAV, CBR MP3, or both simultaneously
Built-in presets: Podcast Standard, Loud, WAV Only
Custom preset save & recall

Screenshots

WaxOn — waveform audit with file stats and conditioning controls

WaxOnRaw recording prep — waveform audit & conditioning

WaxOff — mono source set for EBU R128 delivery

WaxOffBroadcast delivery — EBU R128 to target loudness

macOS 14+ Sonoma & Sequoia

24-bit WAV Output Format

Bundled FFmpeg — no install

Free GPL v3 open source