Rockford Fosgate 1000 Watt Mono amplifer with on-board adjustable crossover, gain control, and Patented Punch EQ. Amplifier features DTM Thermal management circuitry and MOSFET technology for clean performance that does not shut down. CEA Certified RMS Power Rating 250 watts x1 @ 4 Ohms, 500 watts x1 @ 2 Ohms, 1000 watts x1 @ 1 Ohms. Visit www.RockfordFosgate.com 24 hours a day for technical support or call (800)669-9899 M-F 7 am to 5 pm MST.