Walrus Audio Lore MKII Guitar Effect

Stereo Reverse Soundscape Generator for Ambient Exploration

The Walrus Audio Lore MKII Green is a stereo reverse soundscape generator with reverse delay, reverse reverb, and pitch shifting. Five dual-effect algorithms run in series with nested feedback paths. Mode I pairs reverse delay with reverse reverb, Mode II adds octave-up shimmer, Mode III drops an octave down for murky pads, Mode IV runs reverse reverb into forward reverb, and Mode V stacks two pitch delays. Original artwork by Niall Grant.

Five Series Algorithms with Nested Feedback

Each mode stacks two algorithms in series with its own feedback path, so the wet signal keeps developing instead of repeating.

• Mode I: Reverse Delay into Reverse Reverb — interacting feedback paths that re-reverse the signal inside the reverb network
• Mode IV: Reverse Reverb into Forward Reverb — dual harmonic feedback with octave up (Regen) and octave down (Feedback)

MIDI, Expression, and Preset Control

Every knob is exposed over MIDI CC. Three onboard presets plus a Live mode sit on the pedal, and another 127 presets are reachable over MIDI.

• Presets: 3 onboard + 127 over MIDI
• MIDI: 1/8" TRS Type A In and Thru — clock drives delay time 100–1000 ms and Mode IV sample-rate stretch

Hardware, I/O, and Power Requirements

The enclosure measures roughly 100 × 119 × 58 mm including knobs. Stereo I/O runs through dual 1/4" unbalanced jacks. Power is 9 VDC center-negative at 300 mA minimum.

• Dimensions (incl. knobs): 100 × 119 × 58 mm
• I/O: 2 × 1/4" unbalanced input, 2 × 1/4" unbalanced output — true stereo or mono-in/stereo-out
• Power: 9 VDC center-negative, 300 mA minimum