Walrus Audio Fathom

The Fathom is a versatile, ambient-rich reverb pedal offering four distinct algorithms designed to cover everything from subtle room reflections to expansive, atmospheric textures. With Hall, Plate, Lo-fi, and Sonar modes, the Fathom delivers a wide range of reverbs tailored to creative players and tone shapers. Each mode features its own adjustable parameter via the X knob—ranging from pre-delay to filter width and octave blending—giving you detailed control over the character of each reverb type.

A three-position modulation toggle lets you add subtle to intense movement to the reverb trails, while the Dampen knob helps fine-tune the high-end decay for a warmer or brighter tail. The pedal also includes expressive features like a momentary bypass for quick bursts of reverb when off, and a Sustain switch to hold and swell the decay while engaged. With trails mode available for natural fade-outs and a compact, intuitive layout, the Fathom is a go-to reverb for everything from classic depth to cinematic soundscapes.