Mooer EQ Effects Pedal, 2.25 x 4.25 x 1.75 (Skyverb) Studio Mode: Warm & natural indoor reverb, and the decay knob can show different sizes of indoor reverb effects Church Mode: Church reverb, empty and smooth natural reflex reverberation Plate Mode: Plate reverb, let the steel or gold tinsel vibrate and get the man-made mixed sound by referring to the vibration frequency Full small and exquisite metal shell True bypass