The Clarion APA1100 Car Audio Amplifier uses a regulated MOSFET power supply for superior control of output wattage, regardless of input voltage or musical energy content. MOSFET are chosen for their inherent characteristics to provide superior accuracy, stability and control. A toroid-coil transform yields maximum power transfer with minimum heat loss. All connection and controls are on end panels and are straightforward and easy to understand. This device uses gold-plated RCA and barrier connectors to ensure best electrical connection for the amplifier system. Included is and external automotive-type fuse that is easy to replace.