4 Channel Marine Waterproof Amplifier Class D 200W x 4CH @ 4 Ohm DS18’s NXL-X850.4D is a powerhouse designed by DS18 for those seeking exceptional power output and enhanced sound performance. With its 4-channel configuration, the NXL-X850.4D is perfect for powering a set of speakers or bridging the power to supercharge a subwoofer, offering versatile options for customization. The high pass and low pass filters allow precise tuning, ensuring crystal clarity at any volume level for an unparalleled audio experience. The NXL-X850.4D has an IP67 waterproof rating, making it ideal for marine environments and outdoor adventures. Whether you're hitting the trails or cruising on the lake, the NXL series will withstand UV rays, saltwater exposure, and foggy conditions without compromising on performance. The DS18 HYDRO NXL-X850.4D delivers a maximum output of 2400W, with 600W x 2CH bridged at 4-Ohms, 200W x 4CH at 4-Ohms, and 300W x 4CH at 2-Ohms, ensuring a powerful and immersive sound experience. Installation is a breeze thanks to the ultra-compact size and direct power harness design with marine-grade OFC tinned wires. DS18's latest digital amplifier design with SMC technology guarantees top-notch audio quality, while the included marine-grade fuse and fuse holder provide ultimate protection against the elements. Experience enhanced sound quality and power with DS18’s NXL-X850.4D!