HQRP 9V AC Adapter for Alesis P4 AC09 25D 4-pin DIN Connector 9V AC Power Supply Replacement fits QSR DMPro drum machine MIDI Data Disk Quadraverb GT Quadraverb Quadraverb 2 S4 + Euro Plug HQRP&reg; Replacement AC Adapter plus HQRP&reg; Euro Plug Adapter; Input: 100V-120V AC; Output: AC (Alternating Current) 9V, 3A; Connector: DIN 4 pin; Safety Features: High Efficiency and Reliability; Automatic Overload cut-off; Automatic Thermal cut-off; Short circuit and Over Voltage protection; Low Interference & Noise; 100% Compatible with Original AC Power Adapter; 1 Year warranty!