MURMUR
Bass synthesizer

UNDERTOW //
BASS, AND NOTHING ELSE

Undertow does one job: low end. Two sub oscillators, saturation that goes from warm to fuzzy, and filters steep enough to keep the mud out.

UNDERTOW
4.12%Sub Saturation
32.4Analog Grit
12 msTransient
180 degPhase
SKETCH

“Clipped analog bass, hollow in the mids, huge underneath”

SUB + SATREADY TO PLAY

Inside

Built in three layers

Undertow splits a bass into sub, attack and grit, so you can shape each one without wrecking the others.

Sub-Harmonic Engine

Adds layers one or two octaves below the note, phase-aligned so they don’t cancel.

Saturation Modeler

Transistor-style clipping, from a little warmth to full fuzz.

Dynamic Transient Shaper

Pushes or softens the front of each note.

Parallel Layering System

Sub, mid and grit layers, each with its own output.

48 dB Filter Slopes

Steep lowpass filters that keep the sub clean.

100+ Presets

A starting library for dark cinema, grime and techno.

Sketch

Describe the bass you want

01YOU TYPE

Describe it

‘Viscous’, ‘heavy’, ‘growl’. Say it however it sounds in your head.

02SKETCH BUILDS

It sets the layers

Sketch sets drive, compression and the crossover, and keeps everything under 30 Hz clean and mono.

03YOU PLAY

Then it’s yours

Velocity shapes the attack, and every setting stays editable.

Scope

The low end, drawn

Drawn from the settings next to it. The fundamental stays steady even under heavy compression.

SUB OUTDUAL SUB
Dynamic Compress-18.2 dB
Lowpass Filter80 Hz
Analog Saturation74.2%
Stereo Spread20%

The MURMUR suite