Soundigital 1600.1 Evo 4.0 1 Ohm 1600W RMS Car Amplifier The 1600.1 EVO 4.0 amplifier comes with exclusive patented DTR technology. The DTR is a dynamic thermal recovery system that makes the amplifier always maintain high efficiency by accelerating the thermal exchange of electronic components with the heatsink. Do you know what that means? An even more reliable and resistant product for you! Globally patented technology required by SounDigital is not responsible for the misuse of the product. SPECIFICATIONS Power 12.6V 1?: 1 x 1600 W RMS Power 12.6V 2?: 1 x 880 W RMS Power 12.6V 4?: 1 x 484 W RMS Power 14.4V 1? : 1 x 2090 W RMS Power 14.4V 2?: 1 x 1149 W RMS Power 14.4V 4?: 1 x 632 W RMS Frequency Response: 5Hz ~ 20kHz Crossover: LP 50Hz ~ 500Hz / HP 5Hz ~ 80Hz 12dB / 8th Damping Factor: 1000 Maximum Consumption: 174A Dimensions (LxWxH): 23.6 X 18.1 X 5.7 CM Weight: 1.6 kg