A short walkthrough of Quell taming harsh, ringing resonances in real time — before and after.
Load Quell on a track and hear harshness disappear — surgical resonance control without dulling the source.
Quell continuously scans the spectrum and clamps resonant peaks the instant they ring out.
Removes ringing and harshness with dynamic, narrow processing — without dulling or thinning the source.
Vocals, acoustic & electric guitar, drums, cymbals, room tone and full busses.
Dial in exactly how hard Quell reacts — gentle polish or aggressive control.
A clean spectral display shows precisely which frequencies are being suppressed.
Run multiple instances across your whole session without a hit.
Grab the free installer for macOS or Windows. Run it once and Quell appears in your plugin list.
Add Quell as an AU or VST3 insert on the harsh vocal, guitar, drum or buss that's ringing.
Dial sensitivity to taste. Quell tracks the resonances and suppresses them in real time as you play.
“Harsh, ringing resonances are the fastest way to make a mix sound amateur. Quell makes them disappear — for free.”
— BUHR AUDIO
AU & VST3 in any DAW that loads them — on Windows, Apple Silicon, and Intel Macs.
AU · VST3 — loads in Ableton, Bitwig, Logic, Studio One, Reaper, FL Studio, Cubase, Pro Tools and more.
Installers for macOS and Windows. Download, run, and it shows up in your plugin list.
This isn't a teaser — it's the complete Quell, free. Run it on your own sessions today.
Hand-built plugins & instruments for producers — clean, musical, and CPU-friendly.
The full Quell (Spectral Resonance Suppressor) plugin · Mac & Windows · instant download
Quell is free — but if it earns a spot in your sessions, you can tip the developer and fuel the next plugin.
Yes — $0, no credit card. It's a pay-what-you-want release: enter $0 and download instantly, or tip any amount you like to support development. Gumroad delivers the installer the moment you check out.
Quell is a spectral resonance suppressor (dynamic resonance EQ). It detects harsh, ringing resonant peaks across the frequency spectrum and dynamically turns them down in real time, so vocals, guitars, drums and cymbals sound smooth and controlled without losing tone.
AU and VST3 on Windows 10/11 and macOS 11+ (Apple Silicon and Intel). It runs in Ableton, Bitwig, Logic, Studio One, Reaper, FL Studio, Cubase, Pro Tools and more.
No catch. This is the full Quell plugin with no trial limit — yours to use on real sessions, free.
Download the installer for your system, run it, then rescan plugins in your DAW. Quell appears under BUHR AUDIO as an AU/VST3 effect.