Walrus Audio Fathom

^# 20

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$119.99 to $219.99 Price Tier: Standard

4.5 (35)

7 Reviews

Find out who is using Walrus Audio Fathom

13 community setups

36 wishlisted

151 saved

Page last updated Jun 12, 2026

Pricing and availability

We compare 600+ stores and found this item at 8 stores. Prices updated June 12, 2026.

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Reviews

Price

5.0 (27)

$119.99

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5.0 (4)

$218.84

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4.7 (131)

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5.0 (72)

$175.99 12 available New

$109.00 30 available Used

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5.0 (2)

$219.99

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4.5 (4)

$216.95

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4.8 (65)

$199.00

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£200.00

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Average Price: $185

Standard/Professional

$100

$276+

Price Tier

In the Reverb Effects Pedals category, Walrus Audio Fathom is priced in the Standard/Professional range. This is quality gear at a fair price point, suitable for beginners, hobbyists, and pros alike.

Budget

Standard

High-end

Price History

Based on price data from 3 merchants for "Walrus Audio Fathom". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

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Immerse your sound in the depths of the sea with the Walrus Audio Fathom reverb pedal. Known for its unrivaled versatility, this compact powerhouse delivers four distinctive reverb algorithms - Hall, Plate, Lo-fi, and Sonar - each contributing its unique character to create a vast ocean of sonic possibilities. Whether you're crafting a small room ambiance or a modulated trail of ambient echoes, the Fathom ensures your tone never drowns.

Experience the versatility of the Dampen knob to suppress the high frequencies and the X knob to adjust algorithm-specific parameters such as pre-delay or octave up/down mix. The unique Sustain switch offers a near-infinite reverb time, perfect for those ethereal soundscapes. The wet/dry mix knob and time adjustment further extend the pedal's functionality, allowing you to dial in your perfect sound.

A true sound-tweaker's dream, the Walrus Audio Fathom is the ideal tool for musicians seeking to sculpt their own distinctive sonic landscapes.

Key Features:

Four unique reverb algorithms: Hall, Plate, Lo-fi, Sonar
Dampen knob to suppress high frequencies
X knob to adjust algorithm-specific parameters
Sustain switch for near-infinite reverb time
Smart bypass switching
Wet/dry mix knob and time adjustment
Versatile modulation options with three levels
True bypass for pure, unaffected signal when disengaged
Compact, pedalboard-friendly footprint
True bypass for noise-free signal path when the pedal is off
Stylish "Arizona Teal" finish with cream and white ink
Artwork by illustrator Stuart Dooley
Made in the USA

Product 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.

FAQs

What types of reverb effects does the Walrus Audio Fathom offer?: The Walrus Audio Fathom provides four reverb effects: Hall, Plate, Lo-Fi, and Sonar, each offering a unique ambient texture for versatile soundscaping.
Does the Walrus Audio Fathom have true bypass switching?: The Walrus Audio Fathom features buffered, smart bypass switching, allowing you to choose between trails and no trails for seamless transitions.
Can the Walrus Audio Fathom be used with a bass guitar?: Yes, the Walrus Audio Fathom can be used with a bass guitar, offering rich reverb effects that enhance the overall sound without losing low-end clarity.
What power supply is needed for the Walrus Audio Fathom?: The Walrus Audio Fathom requires a 9V DC power supply with a minimum of 100mA. It is recommended to use an isolated power supply for optimal performance.
How does the Walrus Audio Fathom compare to the Walrus Audio Slo?: The Fathom is designed for traditional reverb sounds with easy-to-use controls, while the Slo offers more modulation options and unique ambient effects, catering to different creative needs.

Equipboard's Expert Review

Equipboard tested this

A Versatile Quality Verb

When it comes to reverb pedals, Walrus Audio has always been a name we trust, and the Fathom is no exception. This pedal brings a lot to the table, offering both reliability and innovation.

Right out of the box, the Fathom’s build quality is evident; the knobs feel robust, and the casing is sturdy. Its compact size makes it a pedalboard-friendly option, and we're fans of the top mounted input/output. We also appreciated the soft switch style, which avoids any loud clicking sounds.

The Fathom is loaded with features that make it very versatile. With four reverb algorithms—hall, plate, Lo-fi, and sonar—there’s a lot to explore. We found the sonar mode particularly fun and unique, providing a wide range of sound options. The sustain button is a highlight, offering endless reverb for those atmospheric moments. However, we did note the always-on modulation sound, which some users might find restrictive due to its limited intensity control.

In our sound tests, the Fathom excelled at adding depth and dimension to both clean and distorted tones. It offers a range of lush reverb sounds that can inspire creativity, whether you're after subtle ambiance or more extreme effects. However, we did notice it cuts a significant amount of low end, which is particularly noticeable with acoustic guitars. Additionally, some users might find it too "warbly" or digital when used in front of certain amps.

For its price, the Fathom offers good value, especially considering its versatility and build quality. However, some who just want traditional simple reverb might find it a bit expensive for that use case.

Bottom line: If you’re a musician looking for a reliable, versatile reverb pedal that will inspire creativity and enhance your sound, the Fathom is a fantastic choice.

Rated 5

Videos

Add video

walrusaudioeffects

Walrus Audio Fathom Multi-Function Reverb Tech Demo

walrusaudioeffects

Walrus Audio Fathom Reverb | Reverb Demo

Reverb

Walrus Audio Pedal Play: The Fathom Multi-Function Reverb

walrusaudioeffects

Walrus Audio: FATHOM Multi-Function Reverb

Brett Kingman

Walrus Audio Fathom Multi-Functional Reverb DEMO

Nobes Music

Walrus Audio FATHOM Reverb - Drown in a sea of Reverb!

EytschPi42

Walrus Audio Fathom Multi Function Reverb | From Subtle to Cinematic Ambience! (No Talking Demo)

Andrew Cheng - Guitarist

Walrus Audio Fathom Reverb

shnobel

Walrus Audio - Fathom Multi-Function Reverb - Demo

Ryan Lutton

NAMM '18 - Walrus Audio Fathom Reverb Demo

Premier Guitar

Walrus Audio Fathom Reverb | Reverb Demo | No Talk

Daniel Sonnora

Reviews

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PROS

Versatile with 4 usable modes, catering to a range of musical styles
Inspires creativity with settings that encourage experimentation
Quality construction with top-notch knobs and casing
Modulation switch adds depth and texture to the reverb
Sustain switch feature for endless ambient sounds
Compatible with various musical instruments, including analog synths
Excellent sound quality with the ability to go from subtle to intense
Unique Sonar mode offers standout soundscapes
Encourages more playtime due to its inspiring effects
Easy to dial in tones for both beginners and professionals

CONS

Sustain function and modulation control desired to be more extensive by some
Input/output spacing too narrow for some cable setups
Button lacks tactile feedback, feeling 'spongy' to some users
Paint may peel off with Velcro strip removal
Some found the LED too bright or preferred a different color
One user reported an artificial sound quality, preferring other brands
Needs careful power adapter selection to avoid buzz
May not pair well with digital amps at high mix settings
Artwork and pedal design, while unique, may not appeal to all users
Price point considered high for the perceived value by one user

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Walrus Audio Fathom.

Features and functionality

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The Fathom's Lo-Fi reverb setting is highlighted as a standout feature, providing a unique sound that users frequently return to.
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The Fathom is a mono pedal, unlike the R1 which offers stereo capabilities, more parameter control, MIDI, and presets.
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The Fathom offers four reverb types: Hall, Plate, Spring, and Lo-Fi, with the Lo-Fi providing a vintage feel and blending well in various setups.
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A sustain switch is available, which users find effective for creating expansive, layered sounds, akin to using a piano pedal.
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Value and pricing

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The release of the R1 Mk.II has led to significant price drops on the original R1, making it a more attractive purchase for some.
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Comparisons

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The Fathom is perceived as having a specific vibe, with a washier and lush sound compared to the more flexible R1.
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The R1 is described as more versatile than the Fathom, offering a broader range of reverb sounds from small room to expansive soundscapes.
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A user noted that the Fathom sounds better and is more user-friendly compared to the Slö, which is more suited for experimental sounds.
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The Fathom is praised for its ease of use and user-friendliness compared to the Slö, which requires familiarity with its unique settings.
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The Fathom is preferred over Strymon's Blue Sky and Big Sky for its balance of price and expansive sound capabilities, making it a versatile choice for both subtle and spacey reverbs.
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User experience

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Some users report a "waxy" feel in every mode of the Fathom, leading them to seek alternative reverb pedals.
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Owners of the Fathom often trade for different designs but consistently return to the Fathom due to its reliable and satisfying sound.
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Dialing in the Fathom's settings is relatively intuitive, allowing users to easily switch between subtle and dramatic reverb effects.
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Use cases and applications

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Owners who prefer simplicity and don't frequently change settings find the Fathom more suitable than the R1 for mono setups.
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The Fathom is noted for its compatibility with Daughter-type guitar effects, adding versatility to ambient and indie rock genres.
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Owners utilize the Fathom as an almost-always-on pedal, providing subtle reverb or big, expansive sounds depending on the mix settings.
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Build quality

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The pedal's design includes National Park special editions, appealing to collectors and camping enthusiasts alike for their unique aesthetic.
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4.5 out of 5

Based on 7 Reviews and 35 Ratings

5 star

4 star

3 star

2 star

1 star

iariass

522

about 2 years ago

Strong character reverb pedal

This pedal has his own character, which is something very cool if you like the underwater sounds that can produce, but can be a lack if you want something more like a bright and classical reverb. Although I also consider it versatile, but it has his own limitations.

I love all the parameters from the Fathom and it deserve the purchase just for the Sonar mode, which is delightfull. But actually my favourite function is the Sustain footswitch, that not too many reverb pedals have and it's very versatile and a interesting feature. That's why it's going to be my main reverb pedal for a very long time.

The only disadvantage I've found on this pedal it's the always-on modulation sound, because the switch only gives you 3 options for the mod intensity, but not the capability to turn it off. If you experiment with the X knob it can be found a few spots in which the modulation is more subtle, but still there.

Preferred Settings + Usage:

For "subtle" modulation, I set the switch to Low and turn down to minimum the X knob.

Roles:

Guitarist Composer Music Producer

Genres:

Rock Blues Funk / Soul

From Gear Setup

joseph_knorr

almost 4 years ago

A powerhouse

I'm writing this review for the IQ points to be honest. I like this pedal. I haven't owned any other reverb pedals so my frame of reference is limited but it does everything I need it to do. For what it's worth, I got the special edition with a silver box and I can't read anything on it because the color they used for the labels etc is like a super light neon green so that's wack.

Roles:

Guitarist

Genres:

Rock Metal

cammojodragon

659

almost 8 years ago

Deep, Cavernous Reverbs You Won't Let Go of

What an incredible machine this is. Walrus already wow'd me with the Descent, but this is just as beautiful, quite a bit more versatile, and a good deal more pedalboard-friendly. Unlike the Descent, it won't take much tweaking to find your sound, but much like it, you'll find beauty wherever you turn.

It would be nice to have a little more control over the modulation, to have a dry mix AND wet mix knob (like the Descent has), and for the sustain function to get a little crazier, but these are really minor gripes. This machine is beautiful.

yip

about 5 years ago

Wonderful and Versatile Reverb

It's great for everything from plinky guitar riffs and lush swelling shoegaze/downtempo stuff, drop the mix and decay a bit and it adds a nice tone to bass and drum machine recordings as well. Can't wait to try it on an analog synth soon

whereismyyymind

986

over 3 years ago

Plain sounds with a nice artwork.

I found it rather artifical and not very natural sounding, probably good for experimental stuff. The price definitely did not match with it's performance and I would recommend e.g. Boss' RV-Series to everyone who wants to go one step further.

Roles:

Guitarist Music Producer

Genres:

Rock Pop Alternative rock