At its core, Fable MKII runs two effects in series with independent feedback paths, so your repeats do not just loop, they morph. Reverse delays fold into reverse grains, analogue-style echoes sink into octave-down rumbles, and multi-tap granular engines collide to form dense, organic ambience. Whether you are scoring, sound designing or just pushing your pedalboard into new territory, the Fable rewards experimentation with endlessly shifting textures.

Despite its deep engine, the pedal remains performance friendly. Dedicated Feedback and Regen controls keep each feedback path in check, while the X control and Tweak section give you fast access to grain size, modulation, stereo width and the dramatic Dive / Rise momentary effect. Tap tempo, trails bypass and stereo I/O make it easy to drop into any modern rig, from mono boards to expansive stereo setups.

Under the hood, Walrus Audio’s proprietary MDSP platform delivers high fidelity processing and complex nested feedback routing without sacrificing clarity. With three onboard presets, full MIDI implementation and an assignable expression input, the Fable MKII is equally at home on a compact pedalboard or as the centrepiece of a fully automated studio or live rig.

Five Storybook Granular Modes

The Fable MKII offers five carefully voiced modes that each pair a delay with a granular algorithm, covering reverse ambience, octave-up swarms, octave-down drones, dual multi-tap grain-verb and wild random pitch scattering. This focused set of engines makes it easy to dial in everything from subtle movement to full-blown experimental sound design without getting lost in menus.

Dual Feedback Paths for Evolving Textures

Separate Feedback and Regen controls let you shape how the delay and granular engines feed back into each other, so repeats continually transform rather than simply repeat. This dual-path design is what gives the Fable its signature evolving character, from smooth, flowing ambience to chaotic, glitchy swarms that feel alive under your fingers.

Performance-Focused Tweak and Dive / Rise Controls

The Tweak button and knob provide instant access to stereo Width, modulation Rate and Shape, plus Shift and Ramp for the Dive / Rise function. Holding the tap footswitch triggers a momentary time and pitch dive or rise, with the speed and depth set via Tweak, letting you add dramatic swells, tape-style pitch bends and seasick glides without changing your core settings.

Stereo, MIDI and Preset Ready

With stereo inputs and outputs, three onboard presets plus live mode, full MIDI clock and CC control, and an assignable expression input, the Fable MKII drops seamlessly into modern pedalboards and DAW-controlled rigs. You can sync delays to tempo, automate every parameter, and recall up to 127 additional presets over MIDI for fully repeatable, complex soundscapes.

FEATURES

• Five Dual-Effect Granular Modes - Choose from Reverse into Reverse Granular, Forward into Octave Up, Analogue-style into Octave Down, dual Multi-Tap Grain-Verb, and Forward into Randomised Pitch Granular. Each mode explores a different corner of granular processing, giving you a wide palette of ambient and experimental tones in a single pedal.
• Independent Feedback and Regen Paths - Separate Feedback and Regen controls manage the two feedback loops inside the pedal, so you can keep delays clean while granular textures go wild, or push both into self-oscillating chaos. This independence makes it easy to fine-tune how your sound evolves over time.
• Powerful Tweak Section with Dive / Rise - The Tweak control cycles through Width, Mod Rate, Mod Shape, Shift and Ramp, letting you quickly tailor stereo spread, modulation feel and the behaviour of the Dive / Rise momentary effect. Holding the tap switch shifts the pedal’s clock rate for expressive pitch dives or rises that are perfect for transitions and dramatic accents.
• Stereo, MIDI and Expression Integration - Full stereo I/O, tap tempo, MIDI clock sync, comprehensive MIDI CC control and an assignable expression input make the Fable MKII easy to integrate into complex rigs. You can store three presets on the pedal, access 127 more via MIDI, and map expression to any parameter for hands-free control of evolving textures.

SPECIFICATIONS

General

• Product: Walrus Audio Fable MKII Granular Soundscape Generator
• Type: Stereo granular delay and soundscape pedal
• Finish: Grey 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: Five 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 with changing grain speed and direction
• Feedback Controls: Separate Feedback and Regen knobs for dual feedback paths
• X Control: Adjusts grain size in Mode I and random pitch-change rate in Mode V

Modulation and Tweak

• Tweak Button Functions: Width, Mod Rate, Mod Shape, Shift, Ramp
• Width: Adjusts 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 transition time from 50 ms to 5000 ms
• Momentary Dive / Rise: Activated by holding tap footswitch

Tempo, Presets and MIDI

• Tap Tempo: Controls delay time and sample-rate time stretching (Mode IV)
• Delay Time via MIDI Clock: 100 ms to 1000 ms in Modes I, II, III and V
• Onboard Presets: Three (red, green, blue) plus live mode (white)
• Additional Presets via MIDI: Up to 127
• MIDI Control: MIDI clock sync and MIDI CC for all knobs, mode selection, bypass and tap
• MIDI Connections: 3.5 mm TRS MIDI In and MIDI Thru, Type A

Connectivity and Power

• Inputs: 2 x 6.35 mm (mono or stereo operation)
• Outputs: 2 x 6.35 mm (stereo out or mono-in / stereo-out)
• Expression / Tap Input: Assignable expression control or external tap tempo
• USB: USB-C port for firmware updates
• Power Requirement: 9 V DC, centre negative, 300 mA minimum

Dimensions and Origin

• Dimensions: Approximately 11.9 cm x 10.0 cm x 5.8 cm
• Designed and Assembled: USA

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