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.
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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