These HED series mono-block amplifiers can play down to a 1 Ohms load which is deserving of their High Energy Design name! Constructed with a heavy grade aluminum alloy extruded heatsink HED series amplifiers are built to last. Red ambient logo background lighting completes the finish on this series. Equipped with a variable crossover and remote level controller for system tuning HED series amplifiers can adjust to exactly how you want your car audio system to sound! HED * AB Power Multi Channel and Digital Mono-Block Design * Variable X-Over 12dB HP/LP Switchable * Remote Level Controller for System Tuning * Heavy-Grade Aluminum Alloy Extruded Heatsink * Internal Temperature-Sensitive Fans on Select Models * Power Handling: 500Wx1@1 Ohms RMS Class D/1100W MAX. * Signal to Noise / THD: "- 101dBa / 0.1%. * Input Sens. / Min-Max Voltage: 0.2V - 5.0V / 10.0VDC-17.0VDC. * Crossover: 35Hz -150Hz. * Frequency Response: 24dB. * Dimensions: 2.187"/55.6mm X 8.875"/225.4mm X 14.9"/378mm.