Illuminated Hifonics Badge;SPC - Simpatico Coil Design, HSMD - Hifonics Surface Mount Design;PWM MOSFET Power Supply for Maximum Current Levels;DC, Short Circuit, Thermal and Overload Protection;A classic Hifonics aluminum heatsink with a Zeus 1800 Watt, 1 ohm stable, Class D mono subwoofer car audio amplifier.