Rumble was designed to meet the needs of contemporary bass: the weight, punch, articulation, and movement that bass-led music demands. To deliver that, Rumble’s architecture treats each frequency band as a full synthesizer engine.
Body,Character, and Air each carry their own oscillator, wave-shaper, and effects, then converge through a shared filter stage, multiband compressor, and master EQ, to produce a powerful, unified voice.
Threeparallelengines. One unified sound.
Rumble was designed to meet the needs of contemporary bass: the weight, punch, articulation, and movement that bass-led music demands. To deliver that, Rumble’s architecture treats each frequency band as a full synthesizer engine.
Body,Character, and Air each carry their own oscillator, wave-shaper, and effects, then converge through a shared filter stage, multiband compressor, and master EQ, to produce a powerful, unified voice.
Sub-bass through bass. Weight, punch, and the structural low end of a sound: home to 808s, sub kicks, and the gravitational core of a track.
Low-mids through upper-mids. Tonal identity, presence, and harmonic richness: the recognizable middle of a sound, where its timbre lives.
Upper-mids through treble. Shimmer, articulation, and top-end motion: where a sound gets its lift, edge, and detail.
The result is the first multiband synthesizer, built for bass from the ground-up. Layered sub-, mid-, and high-frequency content stays structurally separate, which means low-end weight, midrange definition, and top-end air can each be sculpted on their own terms.
The architecture itself goes deeper: vocal-formant synthesis, drone textures, percussive transients, cinematic motion, vintage analog warmth, all live within the same per-band approach.
The factory library is built by sound designers and genre-specialized producers, with a sprawling range of presets covering everything from 808s and wobbles to drones, motion sequences, and abstract textures.
Most synths give you one engine. Rumble gives you three.
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An architecture engineered for complex bass sound design
Visible at a glance, deep on every layer
Rumble's interface is organized around the three-band signal flow.
Per-band modules
Body
Character
Air
Three bands. Three synth engines. Each band carries an independent oscillator, wave-shaper with cross-band AM injection, and an effect slot, chosen and tuned per band, then merged through a shared filter and master section. The engine was designed against the weight, punch, articulation, and motion that bass-led production demands, unlocking precision and creativity that other architectures simply can’t reach.
9 oscillator models
A bank of nine synthesis engines, each tuned for a different sonic territory
Dual-oscillator design with sync, pulse-width and band-limited antialiasing
Analog
Dual-oscillator design with sync, pulse-width and band-limited antialiasing
Phase distortion with nonlinear shape and morph controls
Morpho
Phase distortion with nonlinear shape and morph controls
Vocal formant peaks for talking and singing tones
Phonem
Vocal formant peaks for talking and singing tones
West-coast wavefolding with a vactrol-modeled lowpass gate
Fold
West-coast wavefolding with a vactrol-modeled lowpass gate
Wavetable engine with 90+ tables and six phase-distortion modes
Timbral
Wavetable engine with 90+ tables and six phase-distortion modes
Dual noise generator with 90+ acoustic and electronic textures
Noise
Dual noise generator with 90+ acoustic and electronic textures
Curated library of mono bass samples with user-import support
Sampler
Curated library of mono bass samples with user-import support
Specialized drum synthesis engine with transient sampling and FM tone
Kick
Specialized drum synthesis engine with transient sampling and FM tone
Dual-carrier, dual-modulator FM with cubic nonlinearity
Prism
Dual-carrier, dual-modulator FM with cubic nonlinearity
10 wave-shaping modes with per-band AM injection
Each band has an independent wave-shaper positioned after the oscillator. Ten nonlinear transfer functions cover the territory from gentle saturation to aggressive fold and ring modulation
Punch and compression
Clipper
Warm musical folding
Sine
Dense harmonic richness
Foldback
Hyperfold
Fundamental doubling
Rectify
Soft saturation with built-in rolloff
Damped
Asymmetric clipping
Diode
Stochastic grit
Noise
Subtle-to-aggressive ring modulation
Soft
Hard
The AM Injector routes amplitude modulation between bands, Body's signal can shape Character's level, Character can pump Air, for rhythmic interaction that lives inside a single voice.
10 effects with feedback loop
Each band has its own effect slot that can be filled from 10 custom FX chains:
Morphs through impulse-modeled speaker enclosures from small combos to large stacks
Cabinet
Morphs through impulse-modeled speaker enclosures from small combos to large stacks
Offers four algorithms across Digital, Tape, Spin, and Velvet
Delay
Offers four algorithms across Digital, Tape, Spin, and Velvet
Digital layers fuzz, dispersion, chorus, frequency shifting, and sample-rate reduction for complex lo-fi
Digital
Digital layers fuzz, dispersion, chorus, frequency shifting, and sample-rate reduction for complex lo-fi
A spectral transformation engine, phaser, chorus, and drive woven into one
Neuro
A spectral transformation engine, phaser, chorus, and drive woven into one
Offers five algorithms from algorithmic to convolution plate, spring, and bloom-style swell
Reverb
Offers five algorithms from algorithmic to convolution plate, spring, and bloom-style swell
Combines pitch and frequency shifting with spectral destruction
Shifter
Combines pitch and frequency shifting with spectral destruction
Focuses on transient-aware compression and saturation
Smasher
Focuses on transient-aware compression and saturation
Blends comb filtering and Bode frequency shifting for liquid metallic motion
Drift
Blends comb filtering and Bode frequency shifting for liquid metallic motion
Runs a destructive distortion chain, fuzz, wave-shape, spectral shift, convolution
Trasher
Runs a destructive distortion chain, fuzz, wave-shape, spectral shift, convolution
Offers modulated delay with optional pitch erosion
Chorus
Offers modulated delay with optional pitch erosion
Every effect slot includes an independent feedback loop that turns any effect into a self-resonating processor.
Global Tools
Filters
2 filter slots with Single, Serial, and Parallel routing. The filter set spans heritage emulation and creative design:
Eight selectable filter topologies, from classic to complex
Variable
Eight selectable filter topologies, from classic to complex
Seven resonant peaks around the cutoff for multi-resonant coloring
Ripple
Seven resonant peaks around the cutoff for multi-resonant coloring
Three phaser and three flanger modes inside a filter module
Swirl
Three phaser and three flanger modes inside a filter module
Raw, aggressive vintage-style filter, extreme at high resonance
Scream
Raw, aggressive vintage-style filter, extreme at high resonance
Formant sweeps through seven morphable vowel sequences
Formant
Formant sweeps through seven morphable vowel sequences
Modulations
33 modulation sources route to virtually any parameter, with two modulation slots per target and bipolar ratio control:
Macros
Sixteen Macros (two pages of eight) surface to the DAW as automatable parameters
MIDI sources
MIDI sources include Velocity, Mod Wheel, Keytrack, and Pitch Bend, with graphical response mapping for Velocity and Keytrack
ADSR envelopes
Three ADSR envelopes (VCA, Env 1, Env 2) with per-segment curve shaping and legato
LFOs
Four LFOs with Shape, Symmetry, and Pulse Width controls, plus an LFO Mix that merges all four into a single complex source
MSEGs
Two MSEGs with up to 128 breakpoints and independent preset systems for building rhythmic patterns and complex curves
Random sources
Three Random sources running S&H, Lorentz, or Rossler chaos modes
Analog Drift
Analog Drift for slow circuit-style instability
Master section
Multiband Compressor
A three-band compressor aligned with Body, Character, and Air. Eight character modes span the territory from transparent leveling to aggressive multiband compression:
Master EQ
A four-band parametric equalizer with real-time spectrum analyzer. Drag control points to adjust frequency and gain; right-click to change filter type across Low Pass, High Pass, Notch, Low Shelf, High Shelf, and Peak.
Bass and beyond
A factory library shaped by working sound designers and genre-specialized artists. Built to demonstrate the engine's full range, from the genres that called it into being to the territory it opens up.
Expansive sound design
Rumble ships with an extensive factory library organized by sonic character:
Low-end basics and sub work
808
Aggressive bass voices
Growl
Modulated and rhythmic basses
Wobble
Distorted and gritty character
Dirty
Cutting, articulated basses
Sharp
Sustained evolving textures
Drone
Digital, futuristic sounds
Cyber
Rhythmic moving patterns
Motion
Aggressive sustained basses
Reese
Retro analog warmth
Vintage
Save your own work into the User category, and tag your favorites.
Every sound in Rumble was crafted across all three bands. Sub anchored in Body, grit and movement shaped in Character, the transient snap in Air. Every band does its job without fighting for space. Bands drive each other, one frequency breathing against the next, for movement no single-band synth can produce. Immense, riveting bass voices, form-fitted to their sonic environments in a way only Rumble can deliver.
Forged with passion
Rumble’s factory library was crafted by working sound designers and genre-specialized producers each infusing their own distinct voice, resulting in an expansive sonic experience fueled by passionate artists.
“Rumble leads me to textures I wouldn't have discovered with conventional synthesis tools”
“Rumble is a powerful bass design platform combining the best of UVI's workflow with deep modulation features that don't get in your way and make new ideas and iteration for sound design a breeze. Mustache approved.”
“It's rare to come across a synth that genuinely takes a new approach towards sound design, and that's what Rumble does. The concept of multiband synthesis opens up incredible possibilities for bass and textural sound design.”
“The synthesis engines and filters are especially strong in Rumble. I always hoped someone would turn this concept into a synth and am glad that someone reliable as UVI did it.”
“For me, the innovation is that it combines band splitting with the core synthesis structure elegantly & ideas keep coming to you as you try to push it further — and it always sounds fantastic when you do.”
Carlo de Gregorio
“Rumble offers interesting features like frequency band modulation, enabling fast creation of rich, punchy, and dynamic tones.”
“The multiband approach in Rumble is what makes it truly unique. Having total control over each band’s sound source and processing makes for some great sound design possibilities.”
“Rumble is a powerful bass design platform combining the best of UVI's workflow with deep modulation features that don't get in your way and make new ideas and iteration for sound design a breeze. Mustache approved.”
“For me, the innovation is that it combines band splitting with the core synthesis structure elegantly & ideas keep coming to you as you try to push it further — and it always sounds fantastic when you do.”
Carlo de Gregorio
“Rumble is immediate yet deep, thanks to so many different oscillators. I love how it can sound aggressive or warm depending on your need”
“The synthesis engines and filters are especially strong in Rumble. I always hoped someone would turn this concept into a synth and am glad that someone reliable as UVI did it.”
“The multiband approach in Rumble is what makes it truly unique. Having total control over each band’s sound source and processing makes for some great sound design possibilities.”
“It's rare to come across a synth that genuinely takes a new approach towards sound design, and that's what Rumble does. The concept of multiband synthesis opens up incredible possibilities for bass and textural sound design.”
Rumble's multiband synthesis gives musicians a powerful new tool to create massive sounds with laser-like precision. Craft three discrete engines, forge them into one, and discover new realms of inspiration for bass and beyond.
