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Electro-Harmonix Oceans Abyss Dual Stereo Reverb Pedal Certified Open Box

Stereo Reverb Guitar Pedal with Dual Reverb Engines, 10 Reverb Types, Delay, FX, MIDI, 128 Presets, OLED Display, NavCoder Knobs, FX Loop, and USB-C
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Item ID: OceansAbyssd1
Electro-Harmonix Oceans Abyss Dual Stereo Reverb Pedal

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Price:$445 and 50 cents
Savings: $49.50

New for $495.00

Condition Notes:

This returned item is in excellent condition and is in perfect working order. Includes all original accessories. This item ships in its original factory packaging.

This item was thoroughly inspected by our factory-authorized service team and is backed by Sweetwater's exclusive 2-year warranty. The images shown do not necessarily represent the condition of this particular item.

$75.00 suggested monthly payment§ with 6 month special financing‡

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Plunge into a Bottomless Bounty of Multi-effects Mastery

Dive deep into ethereal ambience with the Electro-Harmonix Oceans Abyss, a dual stereo reverb pedal crammed with 10 exceptional echo flavors and myriad multi-effects that will take your tone to uncharted depths. This pedal’s two reverb engines can be programmed completely independently, giving you the power to douse your signal with everything from standard spring and hall reflections to angelic shimmers, psychedelic reverse reverb, polyphonic patches, and beyond. What’s more, the Oceans Abyss’s customizable signal path — which can be effortlessly navigated using the OLED screen and NavCoder knobs — sports eight blocks to inject your sound with delay, modulation, saturation, bitcrushing, and all sorts of other effects. It’s a pedal that puts a broad canvas of sounds at your disposal, and you can even save up to 128 presets and access deeper editing capabilities via the pedal’s Electro-Harmonix app. You also get an all-encompassing assortment of utility and expressive features, including comprehensive MIDI support, a stereo FX loop, USB-C (for editing, preset managing, and more), three assignable footswitch inputs, an expression input that can be assigned to any parameter, and much more. Essentially a multi-effects powerhouse in the guise of a reverb pedal, the EHX Oceans Abyss rewards adventurous guitarists with an extraordinary range, intuitive workflow, and a sea of sonic inspiration to sail upon.

Submerge yourself in 10 distinct reverb tones

Whether you seek a touch of surfy splash, expansive ambience, or shoegaze-ready walls of sound, the Oceans Abyss’s 10 stereo reverb algorithms have you covered. You can even combine these sounds or swap between them, as this pedal’s dual reverb engines are fully independent and feature their own dedicated control sections and footswitches.

  • Room
  • Hall
  • Spring
  • Plate
  • Reverse
  • Dynamic
  • Auto-Infinite
  • Shimmer
  • Polyphonic
  • Resonant

Jam-packed with additional effects

In addition to the Oceans Abyss’s 10 reverb patches, you'll uncover a collection of additional effects to explore. These effects can be placed in any order you wish via the pedal’s customizable signal chain and eight FX blocks.

  • Delay (Digital, Analog, and Tape)
  • Tremolo
  • Chorus
  • Flanger
  • Phaser
  • Graphic EQ
  • Saturation
  • Bit crusher
  • Volume

Simple and straightforward steering

There's no denying that the Oceans Abyss brandishes a nearly bottomless well of sounds to explore. That said, Sweetwater's guitarists find that navigating and editing the Oceans Abyss is smooth sailing thanks to the pedal's intuitive UI and accessible controls. First up, the pedal's OLED screen makes it a breeze to customize your signal chain and fine-tune your tones, with multiple graphic views available to best suit the pedal's various functions: Signal Path, Performance, Settings, Physical, and Explorer. In addition, the Oceans Abyss comes equipped with NavCoder knobs for tactile control and navigation.

Endless expressive capabilities

The Oceans Abyss is overflowing with performance-friendly features, beginning with a robust stereo FX loop that seamlessly integrates with the rest of your stompbox collection. Plus, this loop can be placed anywhere within your signal chain, functioning just like one of the pedal's built-in effects. Furthermore, the Oceans Abyss boasts PC, CC, and tempo clock MIDI support, along with seamless MIDI navigation of your 128 presets (which are also accessible via the pedal’s footswitches). Finished off with an expression/CV input that can be assigned to any parameter in any effects block, the ability to accommodate up to three assignable external footswitches, and programmable latching/momentary footswitch operation, the Oceans Abyss is ready to expand your expressive capabilities and optimize your workflow.

Electro-Harmonix Oceans Abyss Features:

  • Stereo reverb pedal with myriad multi-effects capabilities
  • Dual independent reverb engines allow you to independently combine or swap between the pedal’s 10 reverb flavors
  • Onboard reverbs: Hall, Spring, Shimmer, Room, Plate, Reverse, Dynamic, Auto-Infinite, Polyphonic, and Resonant
  • Customizable signal chain with 8 effects blocks
  • Choose from additional effects to augment your sound, including 3 delays, tremolo, chorus, flanger, phaser, graphic EQ, saturation, volume, and a bit crusher
  • Stereo FX loop can be placed anywhere within the signal chain for seamless integration with the rest of your stompboxes
  • OLED screen and NavCod encoder knobs allow effortless navigation and editing
  • Extensive front-panel control section to dial in your reverb, with dedicated controls for each reverb engine
  • Configurable reverb trails with the click of a button
  • 128 presets with preset navigation available via MIDI or through the pedal’s trio of footswitches
  • Capture infinite sustain effects with the press of a footswitch
  • Dual-action footswitches can be configured for either momentary or latching functionality
  • OLED screen offers multiple graphical views: Performance, Settings, Physical, Explorer, and Signal Path
  • Expression/CV input allows in-the-moment control over any parameter in any FX block
  • Accommodates up to three external footswitches with assignable functions
  • Comprehensive MIDI support
  • Top-class 96kHz/24-bit sample rate conversion
  • USB-C port grants you access to in-depth preset editing and the ability to interface with the EHXport app
  • Illuminated slide pots and switches for bright visibility on dark stages
What is Certified Open Box Gear?

At Sweetwater, we're so picky that what we call "Certified Open Box" is actually better than what most music retailers sell as "new" gear! Our gear hasn't endured hundreds of people a week plunking away at all the keyboards, fumbling through Stairway to Heaven on every guitar or playing with every fader and knob on a mixer or control surface.

Certified Open Box (also known as a demo) means we’ve had it out of the box for our YouTube channel, displayed at events, tested in our studio, or maybe it was in a customer’s hands for a few days and isn’t ‘factory fresh’ as a result. Every Certified Open Box item we sell has Sweetwater’s 2-year Total Confidence Coverage™ warranty and has been tested and verified up to ‘new’ specs by our factory-authorized technicians to make sure it’s in perfect working order before we ship it to you.

When you buy a Certified Open Box item at Sweetwater, you get:
  • 2-year Total Confidence Coverage Warranty™!
  • Products inspected and tested by our factory-authorized techs, guaranteed to function like new (or better)!
  • FREE shipping on most items
  • Equipment that will MEET or EXCEED your expectations!

Click HERE to browse our current inventory of Certified Open Box equipment. Purchasing Certified Open Box gear from Sweetwater is a smart and safe way to save!

Warranty Info

Sweetwater's FREE 2-Year Total Confidence Coverage Warranty

Extra peace of mind at no extra cost.

  • Save money with FREE parts and labor
  • Get back to making music with the industry's fastest turnaround time
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Tech Specs

  • Pedal Type: Reverb
  • Analog/Digital: Digital
  • Effects: Reverb, Delay, Tremolo, Chorus, Flanger, Phaser, Graphic EQ
  • Presets: 128
  • Inputs: 2 x 1/4"
  • Outputs: 2 x 1/4"
  • MIDI I/O: In/Out
  • Other I/O: 1 x 1/4" TRS (expression), 2 x 1/4" (send/return), 1 x 1/4" (footswitch)
  • USB: 1 x USB-C
  • Bypass Switching: Buffered
  • Features: OLED Display
  • Power Source: 9V DC power supply
  • Height: 2.25"
  • Width: 7.125"
  • Depth: 5.75"
  • Manufacturer Part Number: OCEANS ABYSS

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Reviews

Great pedal
This pedal has many useable fx and is really easy to use. I'm impressed on how easy it is to set up custom fx. Great addition
to my board.
Music background: professional amateur
Far more than a reverb pedal
The Electro-Harmonix Oceans Abyss is far more than a reverb pedal—it's a sonic universe.

With dual independent reverb engines, 10 lush algorithms, and deep multi-effects blocks, it transforms your tone from classic spring to shimmering soundscapes and beyond. The OLED interface and NavCoder knobs make complex routing effortless, while MIDI, USB-C, and extensive footswitch/expression support ensure complete control. The Oceans Abyss isn't just a pedal—it's an endless canvas for creativity and inspiration.
Simply amazing sounds for a stereo rig
Once I went to a stereo rig a few years ago with two amps I was hooked, but a lot of my pedals were mono. In a wet-dry rig mono pedals work fine, but I just prefer the stereo effect.
I watched a few videos of this pedal and was impressed by what I heard even through my computer. It is not a cheap pedal by any means, but I finally broke down and bought one.
After using it for about a month now I've barely scratched the surface of all the effects, but so far I have been blown away at how good it sounds. I don't know if it's a big difference from other pedals in mono,but If you run a stereo rig I believe you will think its money well spent just like I do.
Music background: 40 years playing guitar
5 + Star Ambient Machine!!!!!
It's just amazing. There are No limits as to what the Oceans Abyss is capable of. EHX hit a Grandslam with this new, fantastic Reverb Ambient Machine!! I m discovering different sounds all the time. And the 100 factory presets are beyond usable. They re actually really good to incredible!! The Oceans Abyss hopefully is the start of EHX s exploration into the digital world of Ambient pedals. Next up, maybe a Grand Canyon Delay Deluxe in a similar format as the Abyss. If so, take my money EHX!!!!!
Music background: Song writer, guitarist.
A Fantastic Ambient Machine!!
The new EHX Oceans Abyss is incredible!! It's easy to use n alot of fun. This Ambient Machine is great for any style of music. From Blues, pop, rock, hard rock, metal, classical, country to making sound tracks for movies. The Ambient sounds are endless!! The 100 factory presets are excellent and make for instant great fun out of the box. And it's easy to change or add to the factory presets. Worth every dime!!
Music background: Song writer, guitarist, multi instrumentalist