"The DS18 NXL-X1200.5D 5-Channel Class D Marine Waterproof Amplifier Series has a unique design specifically for people who want lots of power and sound with waterproof protection and a compact footprint. This DS18 amp has an incredible 2,800W peak power rating and full-range capability, so you can run it on subwoofers, mid-ranges, and tweeters. The high-pass and low-pass filters help you tune your speaker choice accurately so you can obtain crystal clarity from low volume levels all the way to maximum for the ultimate audio experience. Stable and reliable 4-layer PCB layouts, IP67 waterproof protection, and the ultra-compact size make this waterproof amp perfect for marine, off-road, and DIY applications. It's also UV-, salt-, and fog-resistant for ultimate elemental protection. Includes marine-grade fuse and fuse holder connected inline with main power wire. 12.67""L x 4.4""W x 1.77""H. 2-channel or 4-channel input selector IP67 waterproof UV-, salt-, and fog-resistant Thumping 2,800W peak power Full-range capability for use on subwoofer, mid-range, or tweeter speakers Direct Power Harness design with marine-grade OFC tinned wires"