Walrus Audio Fable MKII Granular Soundscape Generator FX Pedal in Black

The Walrus Audio Fable MKII Granular Soundscape Generator is a stereo ambient powerhouse that fuses lush delays with advanced granular processing. Five dual-effect algorithms, deep modulation, MIDI control and onboard presets let you move effortlessly from smooth cinematic washes to shattered, glitchy clouds and pitch-warped chaos, all in a compact pedalboard-friendly enclosure.

At its heart, Fable MKII runs your signal through two effects in series, each with its own feedback path. Instead of simple repeats, your sound continually evolves as it cycles through reverse delays, octave-shifted grains, multi-tap textures and randomised pitch fragments. Whether you are scoring, sound designing or pushing your band’s intros and outros into otherworldly territory, this pedal gives you a huge, controllable palette of stereo ambience.

Built on Walrus Audio’s in-house MDSP platform, the Fable MKII delivers high-fidelity audio with the flexibility modern players expect. Tap tempo, momentary Dive / Rise, assignable expression, MIDI clock sync and 127 MIDI presets make it equally at home on a compact live board or a fully integrated studio rig. Choose the sleek black finish with Niall Grant’s artwork and drop a storybook of evolving textures at your feet.

Dual Feedback Paths for Evolving Textures

The Fable MKII routes your signal through two effects in series, each with its own feedback control via the Feedback and Regen knobs. Instead of a static loop of repeats, the sound passes back through both processors again and again, morphing into smooth ambience, organic reverberance or dense, glitchy swarms. You can keep things subtle and supportive, or push the feedback for wild, self-developing soundscapes that never quite repeat the same way twice.

Five Granular Modes, From Reverse Washes to Glitchy Clouds

Five carefully voiced modes pair delay and granular processing in different ways, so you can quickly land on a texture that fits the track. Reverse into reverse grains, octave-up cascades, octave-down thunder, dual multi-tap Grain-Verb and randomised pitch grains are all on tap. Each mode explores a different side of granular processing, from long reversed swells to fractured, time-stretched atmospheres, without needing a degree in DSP to dial them in.

Deep Control with Tweak, Tap and Expression

The Tweak system gives one knob five powerful jobs: stereo Width, Mod Rate, Mod Shape, Shift and Ramp. Combined with tap tempo and the momentary Dive / Rise function, you can pull off dramatic pitch dives, slow-motion rises and evolving modulation sweeps on the fly. Assign any control to an expression pedal for hands-free morphing between settings, or repurpose the jack as an external tap input to keep your whole board locked to the same tempo.

MIDI, Presets and Stereo for Modern Rigs

With three onboard presets plus a live mode, the Fable MKII lets you store your favourite patches for instant recall mid-set. Hook up MIDI via 3.5 mm TRS to unlock up to 127 presets, full CC control of every knob, mode selection, bypass and tap tempo, as well as MIDI clock synchronisation. Dual inputs and outputs provide true stereo or mono-in / stereo-out operation, while selectable Trails or No Trails bypass lets you decide whether your soundscapes fade naturally or stop dead.

• Five Dual-Effect Granular Algorithms - Explore reverse delay into reverse grains, octave-up and octave-down granular textures, dual multi-tap Grain-Verb and randomised pitch modes. Each algorithm combines delay and granular processing in series, giving you a wide range of ambient, cinematic and experimental sounds from one pedal.
• Independent Feedback and Regen Paths - Separate Feedback and Regen controls manage the two effect feedback loops individually. This lets you balance classic delay repeats against more extreme granular tails, or push both into complex, evolving soundscapes that feel alive under your fingers.
• Powerful Tweak and Dive / Rise Controls - The Tweak button and knob access stereo Width, modulation rate and shape, Shift and Ramp, while the tap footswitch doubles as a momentary Dive / Rise control. You can set how far and how fast the pedal shifts its internal clock, creating anything from instant pitch jumps to slow, seasick glides.
• Full Stereo, MIDI and Preset Integration - Dual inputs and outputs support full stereo or mono-in / stereo-out rigs, while 3.5 mm TRS MIDI In and Thru provide clock sync and comprehensive CC control. Three onboard presets plus 127 MIDI-accessible slots mean your favourite textures are always ready to go, whether on stage or in the studio.

General

• Product: Walrus Audio Fable MKII Granular Soundscape Generator
• Type: Stereo granular delay / soundscape pedal
• Finish: Black with artwork by Niall Grant
• Processing Platform: Walrus Audio MDSP
• Bypass: Buffered, selectable Trails or No Trails (Trails enabled by default)

Effects and Modes

• Algorithms: 5 dual-effect modes with series routing and nested feedback paths
• Mode I: Reverse Delay into Reverse Granular
• Mode II: Forward Delay into Octave Up Granular (double-speed grain playback)
• Mode III: Analogue-style Delay into Octave Down Granular (half-speed grain playback)
• Mode IV: Multi-Tap Granular into Multi-Tap Granular (Grain-Verb) with time stretching
• Mode V: Forward Delay into Randomised Pitch Granular (variable grain speed and direction)
• Feedback Controls: Separate Feedback and Regen knobs for the two feedback paths
• X Control: Adjusts grain size in Mode I and random pitch-change rate in Mode V

Modulation and Tweak Controls

• Tweak Button Functions: Width, Mod Rate, Mod Shape, Shift, Ramp
• Width: Controls stereo spread of the wet signal
• Mod Rate: 0.1 Hz to 5 Hz
• Mod Shapes: Sine, square, random
• Shift: Sets Dive / Rise target between 0.5x and 2x
• Ramp: Sets Dive / Rise time from 50 ms to 5000 ms
• Momentary Feature: Dive / Rise via tap footswitch

Tempo, Presets and MIDI

• Tap Tempo: Controls delay time in Modes I, II, III and V, and sample-rate time stretching in Mode IV
• Onboard Presets: 3 (red, green, blue) plus live mode (white)
• Total Presets via MIDI: Up to 127
• MIDI: 3.5 mm TRS MIDI In and MIDI Thru, Type A
• MIDI Clock: Synchronises delay time and sample-rate stretching
• MIDI Control: CC control of every knob, mode selection, bypass and tap tempo

Connectivity

• Inputs: 2 x audio inputs (stereo or mono-in / stereo-out operation)
• Outputs: 2 x audio outputs
• Expression / External Tap: Assignable expression input, alternatively configurable as external tap tempo
• USB: USB-C port for firmware updates

Power and Dimensions

• Power Requirement: 9 V DC, centre negative
• Current Draw: 300 mA minimum
• Dimensions: Approximately 11.9 cm x 10.0 cm x 5.8 cm
• Designed and Assembled: USA