Cleansix Raw

Cleansix Raw is a free one-knob resonance and harshness cleanup plugin for macOS. Turn the single CLEAN knob and harsh resonances, boxiness and ringing are detected in real time and pulled down by a dynamic notch engine that tracks the peaks frame by frame, auto-leveled so the track just gets clearer, never quieter. Works on vocals, drums, synths and full mixes.

A fast fix for a harsh source — one knob, no bands to set and no notches to hunt.

Note: Cleansix Raw uses a small 2 ms lookahead to protect transients, so it reports a small, constant amount of latency to your DAW (automatically compensated) — best used while mixing rather than for live monitoring.

Formats: AU, VST3, and Standalone — Universal Binary (Apple Silicon + Intel), code-signed and notarized by Apple, so it installs cleanly on macOS. Free to download.