Mooer Skyverb Mini digital reverb pedal. Three reverb modes: Studio/ Church/ Plate. Studio: warm & natural indoor reverb, and the decay knob can show differentsizes of indoor reverb effects.Church: church reverb, empty and smooth natural reflex reverberationPlate:plate reverb, let the steel or gold tinsel vibrate and get the man-mademixed sound by refering to the vibration frequencyMini size is space-saving and easy to carry along. True bypass design to minimize the tone loss. Power Supply: DC 9V AC adapter (not included)