HCP 4D is a D Class car audio amplifier, able to offer up to 1160W (RMS); it is the ideal choice for those who want high power levels in complex systems. Extremely versatile, complete in its functions, provided with Speaker-In and RCA-In inputs to work with any head units, it has been designed to work also in mono (selectable mode), for a three-channel system with sub and front, or a powerful two-channels system. All the Hertz Compact Power amplifiers are assembled with high-quality components and feature a complete and by-passable crossover system. The dissipation system is optimized with the heat being transferred to the heat sink and then dissipated through the sides of the amplifier. Features - • Compact Design Built from Extruded Aluminum Heatsink with the Top Side Ensuring Effective Transfer of Heat. • Special Balanced High-Noise Rejection Input Circuitry on the Pre-In or Speaker-In Inputs. • Speaker-In (For OEM Head Units) and RCA-In (For Aftermarket Head Units) Inputs. Power Supply - • Power supply voltage / fuse: 11 ÷ 15 VDC / 2 x 20 A • Idling current (power ON/OFF): 1.6 A / 0.04 mA • Remote In: 7 ÷ 15 VDC - 1 mA • ART: Automatic Remote Turn-On/Off with Speaker-In Amplifier Stage - • Distorsion - THD (100 Hz @ 4 Ω): 0.02 % • Bandwidth: 10 ÷ 60K Hz • S/N Ratio (A weighted @ 1 V): 100 dB • Damping factor (100 Hz @ 4 Ω): 200 • Pre-In sensitivity: 0.2 ÷ 5 VRMS • Speaker-In sensitivity: 0.8 ÷ 20 VRMS