Make your time on the water even more enjoyable with this razor marine Series class d amp from Power Acoustik. This 5-channel 2,500-Watt Max, 100w RMS x 4 + 400w RMS x 1 @ 4Ω amp uses a Compact 4.75" chassis design for installation versatility. The amp has splash-resistant conformal-coated circuit boards and MOSFET power supply with audiophile-grade irtm transistors. Military-grade smt PCB maintains Dynamic performance. Direct short, thermal & overload circuits protect the amp as well. This unit also has 200mv–6v low-level RCA inputs, high-level Input with auto turn on when it senses a signal, variable 12Db high-pass & low-pass crossovers and a 10hz–50hz variable 12Db subsonic Crossover protects subwoofers. Dimensions are 1.63"H x 4.75"W x 12.25"D.