DS18 HYDRO NXL-F4 Flush Mount Class D Full-Range Marine 4-Channel Boat, ATV, UTV Amplifier with Voltmeter 1200 Watts The F4 is an exact duplicate of the very popular NXL-400.4 but now offered in flat mount configuration so you can keep a flush and clean look to your install. This 4 channel amplifier is the go to source to power all your DS18 marine speakers as all are an amazing fit with this sleek and powerful hydro amp. Highlights Flush / Flat mount design so you can keep your install looking
