Electro-Harmonix Oceans 12 Pedal. Reverb for guitar and bass.

• For electric guitar and bass
• Reverb
• Based on the Oceans 11 with even more reverbs and features
• Two simultaneous, independent stereo reverb engines
• 24 presets and advanced inputs and outputs allowing stereo input and output or mono send and return with pre- and post-reverb options
• Includes a new 'Tide' pedal control for stereo image manipulation, a lo-fi control, and an external expression pedal input jack, along with a 3-button control
• Tail switch
• Infinite reverb that can be played back with a different reverb effect
• 12 reverb types: Room, Spring, Plate, Reverse, Echo, Trem, Mod, Dyna, Auto-Inf, Shimmer, Polyphonic, and Resonant
• Controls: Tone / Tide, Time / Lo-Fi, Predelay / Send Level, Effects Level / Inf. Level, Reverb Type, Edit 1 and 2
• Effects-on LED
• Effects bypass pedal switch
• L / Mono input and R / Return input (2 x 1/4" jacks)
• L / Mono output and R / Send output (2 x 1/4" jacks)
• Expression pedal switch (1/4" TRS jack)
• Power connector with 5.5 x 2.1 mm barrel connector and center negative
• Powered by a 9 V DC power supply (included)
• Dimensions (width x depth x height): 145 x 120 x 64 mm (5.71" x 4.72" x 2.52")
• Does not operate on batteries