AROMA AOV-3 OCEAN VERB Effect Pedal Digital Reverb Guitar Effect Pedal Distinguishing feature:lever designed to prevent stamping on operation knobs,to protect your setted parameter. Specification: Input Impedance: 470k Ohms Output Impedance: 100 Ohms Power Supply: AC Adapter 9V DC, center negative Current Draw: 68mA Dimensions: 94mm (D) x 42mm (W) x 48 mm (H) Feature: High quality digital reverb pedal , using a 32 bit fixed point DSPchip Three reverb modes: room/ spring / shimmer Full metal shell Very small and compact design True bypass switch Package Included: 1* Ocean verb effect pedal