Vocal saturation that melts into the mix.
A multiband drive canvas where you paint saturation exactly where the voice needs it — node by node, band by band. Grit at 3 kHz without touching the low end. Chest warmth without dulling the air. And when you push it, 4× oversampling keeps the top end clean.
Butter is a vocal-focused multiband saturator built around a live spectrum canvas. Instead of one global drive knob, you drop saturation nodes directly onto the spectrum — up to 8 at once — and each node saturates only its own frequency band. Horizontal placement sets the frequency; vertical placement sets how hard it's driven.
The result is grit on the 3 kHz presence without touching the low end, chest warmth without dulling the air, and density that sits inside the track instead of on top of it. Each node gets its own tone stack — not one global character section. And the engine stays clean when you push it: 4× oversampled HQ, a DC-safe drive path, and zero added latency.
Up to 8 nodes · 30 Hz–18 kHz
Double-click the spectrum to drop a node, then drag it: horizontal = frequency, vertical = drive. Each node is a constant-Q band, so it colors only the slice you point it at.
Nodes blend additively — overlap them to stack drive. Solo any node to audition just that band. Width (bandpass Q, 0.4–8) shapes how focused each band is.
Drive · Umph · Warmth · Depth · Air
Select a node and five tone knobs appear: Drive sets saturation amount; Umph adds low-mid chest punch; Warmth pushes harmonic body; Depth lifts stereo presence; Air adds high-shelf brightness above the node.
Unlike most saturators, tone is per band — grit at 3 kHz and warmth at 200 Hz can coexist without fighting over one global tone section.
4× oversampling · DC-safe · zero latency
HQ mode runs the whole drive chain at 4× through cascaded polyphase halfbands, pushing distortion aliases far below audibility — no fizzy top end when you lean on a node.
A DC blocker after the node sum drains the offset that asymmetric tube shaping creates, so headroom stays honest. The filters are IIR, so Butter still reports zero latency — safe for tracking.
Fine drag · keyboard nudge · live readouts
Shift-drag moves a node at a fifth of cursor speed with crosshair guides and a live frequency · drive readout, so precise placement doesn't need zooming.
Arrow keys nudge the selected node by semitones and drive percent, S solos, M mutes, delete removes. Peak-hold traces on the analyzer and meters keep transients readable while you work.
Name your price at checkout — including free. No subscription. Instant download after checkout. Runs in your DAW on Windows and macOS (Apple Silicon and Intel).
Multiband saturator
Vocal saturation that melts into the mix.
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