Electro-Harmonix Oceans Abyss dual reverb and multi-effects pedal detailed

August 18, 2025 · 3 sources

The Electro-Harmonix Ocean Abyss is a dual-engine stereo reverb and multi-effects pedal, described by Guitar Pedal X as replacing the Oceans 12 as Electro-Harmonix's flagship reverb workstation¹. Guitar Pedal X published its account on May 19, 2025¹; Delicious Audio's page carries an update date of August 18, 2025².

The pedal runs two independently programmable stereo reverb engines, each with its own pan, pre-delay, time, blend and low/high EQ controls, and both can be used at once²¹. The 10 reverb types are Room, Hall, Spring, Plate, Reverse, Dynamic, Auto-Infinite, Shimmer, Polyphonic and Resonant²¹. Up to eight effects blocks form a customizable signal chain, two of which may be reverb; the remaining blocks draw on digital, analog and tape delays, tremolo, chorus, flanger, phaser, graphic EQ, saturation, bit crusher and volume²¹. The stereo FX loop can be placed anywhere in that chain¹.

There are 128 presets, recalled through the pedal's three footswitches or via MIDI¹. The footswitches can be set to momentary or latching operation, and a footswitch press gives infinite reverb sustain²¹. Reverb tails can be switched on or off². An OLED screen offers Performance, Settings, Physical, Explorer and Signal Path views, navigated with a rotary encoder²¹. Rear connections include stereo inputs and outputs, the FX loop on TRS jacks, MIDI In and Out, an expression/CV input, a footswitch input for up to three external switches, and USB-C for the EHXport app, which Delicious Audio lists as coming soon²¹. Conversion is 96kHz/24-bit²¹.

Guitar Pedal X gives dimensions of 18 x 14.6 x 5.7cm (7.125 x 5.75 x 2.25 inches) and a MAP/RRP of $495¹. Delicious Audio and RockBoard both state a supplied 9.6VDC / 500mA power supply³²; RockBoard lists 9V DC, center negative, 500mA³.

The Ocean Abyss sits among Electro-Harmonix's multi-effects pedals. RockBoard describes it as "a powerful reverb and multi-effects pedal designed for musicians seeking expansive soundscapes"³.