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Walrus Audio Fathom Multi-function Reverb Pedal

Reverb Effects Pedal, with 4 Reverb Modes, Sustain Switch, Switchable Trails Mode, and Momentary or Latching Operation
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Four Entrancing Echos of Unfathomable Depth

Walrus Audio’s Fathom multifunction reverb pedal plunges your tone down to the deepest depths of ethereal echo, providing you with four distinctive reverb algorithms to explore. From standard Hall and Plate settings to moody Lo-Fi and “Sonar” reverberations, Fathom delivers an ocean of sonic versatility. What’s more, each of Fathom’s four modes offers a program-specific parameter via the “X” knob, ranging from pre-delay adjustment to flexible filter width. You also get a 3-position switch to mix in your desired level of modulation and movement to the reverb trail. Once your tone is locked in, Fathom reveals two of its most powerful features: A dedicated Sustain switch that keeps the reverb decay rolling and a Momentary splash of reverb accessible with a quick press of the Bypass switch. Whether you’re an ambient aficionado or simply seeking a do-it-all reverb with a touch of quirky character, Walrus Audio’s Fathom marks a sea change in the world of stompbox echo.

A quartet of flexible reverb programs

Designed first and foremost for versatility, Fathom supplies you with four distinctive reverb algorithms to explore. Further, Fathom’s mysterious “X” control dramatically changes function depending on your selected algorithm.

  • Hall: Simply a classic hall reverb, offering a vast, open-sounding character and a slight high-frequency roll-off to the decay. In this mode, the X knob dictates the amount of pre-delay in your signal.
  • Plate: This setting delivers the lush, smooth, and utterly old-school sound of a plate reverb unit. Just like in Hall mode, Plate’s X control determines pre-delay.
  • Lo-fi: Fans of more experimental reverb sounds will be thrilled with Fathom’s Lo-fi reverb setting, a filtered reverb tone with dynamic decay ranging from an ultra-thin rasp to a warmer, more full-range echo. Turn the X knob in Lo-fi mode to adjust the filter’s width.
  • Sonar: Finally, Sonar provides a reverb with both a high and low octave effect for a touch of celestial ambience. Blend between both octaves using the “X” knob in Sonar mode.

Walrus Audio pedals: built by sound-tweakers for sound-tweakers

The artists, musicians, and engineers at Walrus Audio take pleasure in chasing sounds that inspire, like the perfect breakup of an overdrive, a beautifully thick distortion, an endlessly sustaining reverb, and a self-oscillating delay. Simply put, these guys love to play with sound. They design stompboxes that re-create the sonic textures that they hear in their heads. Built by sound-tweakers for sound-tweakers, Walrus Audio's guitar pedals are as versatile as they are functional. At Sweetwater, we’ve found that Walrus Audio’s pedals are the perfect tools for guitarists who want to sculpt their own unique sounds.

Walrus Audio Fathom Multi-function Reverb Pedal Features:

  • 4-program reverb pedal, ranging from a subtle echo to full-on soundscape sculpting
  • Choose from classic Hall and Plate reverbs or the more experimental Lo-fi and Sonar settings
  • “X” knob unlocks a program-specific parameter on each individual setting, from pre-delay adjustment to filter width and beyond
  • 3-position modulation switch to imbue your trails with a touch of movement and character
  • Hold the Bypass switch down for a momentary splash of reverb
  • Sustain switch keeps your reverb trails rolling for nearly infinite soundscape generation

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Tech Specs

  • Pedal Type: Multi-function Reverb
  • Analog/Digital: Digital
  • Effects: Hall, Plate, Lo-Fi, Sonar
  • Inputs: 1 x 1/4"
  • Outputs: 1 x 1/4"
  • Bypass Switching: Buffered, Smart Bypass switching (trails/no trails switchable)
  • Power Source: 9V DC 100mA power supply required (sold separately)
  • Height: 1.39"
  • Width: 2.6"
  • Depth: 4.77"
  • Weight: 0.79 lbs.
  • Manufacturer Part Number: 900-1040

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Customer Reviews

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Rated 5/5

Killer reverb

I've had the Fathom on my board for several months now and still find twiddling with the settings to be great fun as well as inspirational. My favorite setting is plate (P) with the mod set at hi and the mix just under the 50/50 line. The Lo-Fi setting (L) sounds to me like a spring and can get into crazy territory with the mix cranked. The Sonar (S) setting with the harmonics is something I don't personally use much but I've been experimenting with it.

While this has been my first Walrus pedal; it will definitely NOT be my last!
Music background: Songwriter, performer, & producer
Rated 5/5

The G.O.A.T.is

So awesome my friend tried it and got the same one lol. I wish I could have got the respray like him but the deep sea diver doesn't disappoint. I've had it since it first came out, it was my first $ pedal. You will never need another reverb. Spring is overrated anyways. Sonar will change your life. One of those situations where explanation is pointless you're better off just getting immersed in it your own way.
Rated 5/5

Do-all reverb pedal. Amazing.

Just got this 2 days ago and, after logging at least a good 10 hours actually playing with it, I am looking to get rid of a few reverb pedals that I no longer need. All 4 modes a very much useable and I haven't really found a knob setting that doesn't just inspire. Lo-fi mode with all knobs but mix dimed, mix at unity. Try it through a clean amp and thank me later. This thing makes me want to play more; almost makes it happen. Awesome reverb pedal.
Rated 5/5

Wonderful

I'm not generally a review guy. I was searching for a reverb to use with a Marshall DSL 40cr. Read a lot of reviews and watched a lot of videos. I wanted a pedal that had a fairly wide range of sound options available. I finally settled on this one. This sounded great the moment I turned it on. Goes from subtle to beyond and everything in between. I actually had no interest whatsoever in the sustain feature and had no intention to use it. I'm amazed at how organic and musical it is. Everything about this pedal is wonderful. If this pedal is on your short list of potential reverbs I can't imagine a situation where it would disappoint. I had high expectations and they were met. Well done!
Music background: 35+ years
Rated 5/5

Didn’t Know a Reverb Pedal Could Do All This

I love a little bit of spring reverb. My main amp is a clone of a 1964 Blackface Princeton Reverb so that's covered. This pedal does 4 OTHER kinds of reverb and is incredibly flexible. The Decay, Dampen, and Mix controls are a strong foundation, but the Program and X controls let you explore sonic places I'd never thought of. I mistakenly thought the H-P-L-S knob was a 4 position selector. It's not - it lets you pan variably from one mode to the other. The Hall and Plate reverb effects are what you'd expect, but you can blend them. I can't really explain lo-fi well. It's cool, but the range between that and the Sonar with octaves added is pure fun.
Music background: Rank amateur
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