Rockford Fosgate M400-4D 4-Channel Marine Amplifier

The Prime M400-4D amplifier is a 400 Watt 4-channel high efficiency Class-D amplifier specifically designed for Marine and Powersport applications. The amplifier features a Marine grade PC Board, and the Class-D circuit topology is so efficient, it consumes much less current from your charging system over traditional Class-A/B amplifiers.

Rockford Fosgate's Moto-marine amplifiers have not only the capabilities you expect a Rockford Fosgate amp to have, but they have designed them to stand up to the environmental conditions you are likely to subject them to. With corrosion resistant stainless steel hardware and two-part epoxy coated circuit boards, these units are designed with you in mind. Whether on the lake, on the road or in the back woods these amplifiers are ready for an adventure.

• Dust - Rockford makes sure that displays and motor structures are sealed up tight so they look as clear as possible and perform day in and day out no matter how many times you hit the trails.

• UV Inhibitor Materials - Centrex and ASA plastic materials are used for their UV radiation resistance and components are tested in accordance with ASTM D4329 testing and certification procedures.

• Corrosion Protection (Electronics) – Two part epoxy coated PCB boards prevent corrosion of critical components due to exposure in moisture rich environments.

• Stainless Hardware – Stainless hardware is used due to its natural resistance to corrosion and rusting. This ensures that electrical connections will not degrade over time due to exposure to the elements.

Product Features:

• 4-channel marine amplifier
• Power Handling:
• 75 watts RMS x 4 at 4 ohms (100 watts RMS x 4 at 2 ohms)
• 200 watts RMS x 2 in bridged mode (4-ohm stable in bridged mode)
• Conformal-coated circuit board and UV-resistant finish
• Variable high- and low-pass filters (50-500 Hz, 12 dB per octave)
• Variable bass boost (0-12 dB at 45 Hz)
• Three auto-turn on modes
• CEA-2006 compliant
• Preamp-level inputs and outputs
• 4-gauge power and ground leads recommended — wiring and hardware not included with amplifier
• Dimensions: 9-1/8" W x 2" H x 6-7/8" D