HQRP 18V AC Adapter for Acoustic Research AR 48-18-700 AW871 AW880 AW877 Speaker Power Supply Cord Adaptor + Euro Plug Adapter HQRP&reg; Replacement AC Adapter Charger plus HQRP&reg; Euro Plug Adapter; Input: 100V-240V AC (USA plug+EURO adapter); Output: DC 18V, 1A; UL Listed; Safety Features: High Efficiency and Reliability; Automatic Overload cut-off; Automatic Thermal cut-off; Short circuit and Over Voltage protection; Low Interference & Noise; 1 Year warranty!