Electro Harmonix Oceans Abyss - Dual Reverb

A "laboratory" reverb in the tradition of classic Electro-Harmonix

With the Oceans Abyss, Electro-Harmonix builds on its historic expertise in reverb to offer a much more "workstation" approach: here, reverb is no longer just an end-of-chain effect but a creative platform capable of assembling multiple processes around two stereo reverb spaces. The idea is simple: to cover the major reverb families (spring, plate, hall, room) while opening the door to modern textures (shimmer, reverse, resonances, infinite sustain) and rack-worthy routing, all in a pedal format.

For which musicians and styles?

The Electro-Harmonix Oceans Abyss targets guitarists (and more broadly stereo musicians) who want to sculpt detailed atmospheres without stacking multiple pedals. Perfect for post-rock, shoegaze, ambient, indie, modern pop, sound design, but also rock/blues whenever a credible and expansive reverb is sought.

In live settings, the presets and foot control allow switching from a slapback to an immersive wash instantly. In the studio, the stereo capability, built-in EQ, and routing options facilitate setting up "mix-ready" reverbs, from simple halos to complex effect chains.

Technical specifications

Effects	Reverb, Multi-effects	Type	sector
Format	Pedal	Use	electric guitar
EQ	Yes	Color	Green

Reverb engines	two stereo engines usable simultaneously	External footswitch input	up to 3 additional switches
Available reverbs	Room, Hall, Spring, Plate, Reverse, Dynamic, Auto-Infinite, Shimmer, Polyphonic, Resonant	Audio inputs	6.35mm jack (stereo)
Routing	customizable, with up to 8 effect blocks per configuration	Audio outputs	6.35mm jack (stereo)
Infinite reverb sustain	footswitch-activated	Effects loop	stereo Send/Return on TRS jacks
Inputs/outputs	stereo	MIDI	In and Out (PC, CC and tempo clock via MIDI In)
Conversion	96 kHz / 24-bit	USB-C port	connection to a computer and management/editing via a dedicated app
Presets	128, programmable	Bypass	buffered bypass
Settings storage	in the presets	Dimensions	180.98 mm x 146.05 mm x 57.15 mm
Tail management	can be enabled/disabled	Included accessories	DC power supply
Dual-action footswitches	momentary or latch	Required voltage	9.6V DC (center-negative)
Expression/CV input	controls most parameters	Power consumption	500 mA