The Walrus Audio Fathom is a feature-rich, multi-function reverb pedal with four distinct algorithms: Hall, Plate, Lo-Fi, and Sonar. The four mode allows players to explore a vast array of ethereal sonic landscapes—from subtle, natural reverbs to more experimental sounds featuring octave effects. The Fathom also includes a modulation switch, which adds color to the reverb tails as you select low, medium, or high modulation. The X control allows customization within each mode, such as adjusting pre-delay or blending octaves.

The Fathom has two switches: one for on and off, and then a momentary Sustain switch for infinite reverb sustain. All in all, the Fathom is highly versatile Reverb pedal that is suitable for both live performances and studio work. It's also compact and pedalboard-friendly with its rear-mounted jacks.

This 2020s Walrus Audio Fathom is gently used and functions 100% as it should. It shows some minor scuffs and signs of use, and the previous owner installed micro Dual Lock velcro on the bottom (see photos).