Lanzar MAXP1000N MAX 1500 Watt Mono-Block MOSFET Power Amplifier 1 x 375 Watts RMS @ 4 Ohms - Variable Subsonic Filter - RCA Line Input - T.H.D:&lt;0.05% 1 x 750 Watts Max @ 4 Ohms - Variable Low Pass Crossover - S/N Ratio:&gt;95dB 1 x 1500 Watts Max @ 2 Ohms - Anti-Thump Turn-On - Power Protection LED Indicators - Frequency Response:15Hz-150Hz