The true-marine ms-da41400 will resist corrosion and the incredible 1400 Watt Output (peak) will power four signature speakers, or two signature speakers and a subwoofer with ease. Alternatively create your own configuration with dedicated Channel and bridging options available. The ms-da41400 is a 4 Channel Class-D Hi-Fi marine amplifier; the key benefit of a Class-D amplifier is low battery drain with a high Output, making this the perfect amplifier for the marine environment. The ms-da41400 incorporates heat-tempered and conformal Coated pcb's for maximum product life Plus the amplifier chassis is a heat Sink; reducing component Core temperature and increasing efficiency. The stainless steel Cover conceals the amplifier set up controls and connections for a discrete, attractive look. Connections include four speaker channels for zone 1 and 2, with bridging ability to power subwoofers. RCA line-level inputs allow for easy connection to new or existing systems.