M400-4D Amp
The Prime Rockford Fosgate M400 4D amplifier is a 400 Watt 4 channel high efficiency Class D amplifier specifically designed for Marine and Powersport/outdoor applications. Power ratings on Rockford Fosgate amplifiers conform to CEA 2006 industry standards. These guidelines mean your amplifier's output power ratings are REAL POWER numbers, not inflated marketing ratings.