Dead Quiet00
Free fully-featured demo · VST3 · AU · macOS & Windows · Precision + Zero-Phase modes
Auto-Align fixes phase between tracks. Meters just point at the problem. Fiix finds the frequency zones where your master genuinely cancels in mono and repairs them in real time, so the fold-down comes back as level. There is no gain stage in the box, yet the mono fold gets louder. The mid channel is mathematically untouched, always.
Insert Fiix last on the chain and press play. LEARN listens for twenty seconds, places the crossovers around the exact frequency regions that cancel in mono, sets Sub Lock and writes a plain-English summary of what it found. UNDO restores your previous zones. Everything after that is automatic.
MONO LOSS is the number no other meter shows: how much level and tone you lose when a phone or club rig folds you to mono. Fiix pulls it toward zero, per band, pre and post. Turn on DELTA and solo a band to hear exactly what is being removed. Silence means nothing needed fixing.
When the pass is done, one click writes a branded Phase Report: the verdict, how much mono loss you recovered, every band’s health, and each timestamped fix with its bar number and frequency range. A clean, shareable document you can send straight to the mix engineer or drop into a master delivery.
Fiix re-aligns inter-channel timing faults, rotates drifted phase back into place and rescues genuinely inverted polarity losslessly. It only reduces width as a last resort, so your stereo image stays intact instead of getting sacrificed.
Precision uses linear-phase crossovers and 150 ms lookahead so fixes land at fault onset, with zero phase rotation. Zero Phase drops to 0 ms for tracking and low-latency printing. Bypass is a sample-aligned crossfade in every mode, so you can A/B mid-repair.
| Feature | What it does |
|---|---|
| Automatic phase repair | Finds the frequency zones that cancel in mono and repairs them in real time. |
| LEARN auto-zone | Listens for twenty seconds and places the bands on your material’s trouble regions. |
| Precision mode | Linear-phase crossovers plus 150 ms lookahead so fixes land at fault onset. Zero phase rotation. |
| Zero Phase mode | 0 ms latency for tracking and low-latency printing. |
| MONO LOSS meter | The dB you lose folding to mono, overall and per band, pre and post. |
| Timing + phase align | Re-aligns inter-channel delay and rotates drifted phase back into place. |
| Polarity rescue | Flips a genuinely inverted band losslessly instead of reducing it. |
| Sub Lock | Keeps the low end phase-coherent for punch that survives the club. |
| Delta solo | Hear exactly what is being removed. Silence means nothing needed fixing. |
| Event log + Phase Report | Timestamped fixes and a branded PDF you can send the client. |
| Zero added colour | The mid channel is mathematically untouched, always. |
