HQRP 12V AC Adapter / 12-Volt Adaptor for Jim Dunlop ECB005 Replacement fits Rockman Guitar Ace/Metal Ace/Bass Ace Headphone Amplifier, Power Supply Cord [UL Listed] plus HQRP Euro Plug Adapter HQRP&reg; AC Adapter plus HQRP&reg; Euro Plug Adapter; Input: AC 100V - 240V; Output: DC 12V; NOTE! Jim Dunlop Rockman Ace Headphone Amplifiers use either 12V or 9V AC Adapter. Before ordering please check if your original AC adapter is 12V. 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!