Audiotek - AT-PS42M Output 40A-42A Amp Mobile 13.8 Volt DC Heavy Duty Power Supply 40-42 Amp DC Regulated Power Supply. Good For Home/Office/Installer/Party/Entertainment/Radios/Scanners/HAM Radios/Auto Sound Systems 110V Input 13.8V Output Easy to use with Short Circuit protection! Powers Cellular Phones, 12V DC CB Radios, Scanners, HAM Radios, Auto Sound Systems