ROCKFORD FOSGATE – M400-4D 400 Watt Full-Range Class-D 4-Chanel Amplifier


The M400-4D is a 400 Watt 4-channel high efficiency Class-D marine amplifier featuring a Marine grade PC Board, on-board Punch EQ, variable crossover and tri-state protection circuits.

¥ 12dB/octave Butterworth crossover

¥ 2/4 channel input switch

¥ 4 Gauge power/ground connectors

¥ Cast aluminum heatsink

¥ Top mounted controls

¥ Marine grade 2-part epoxy coated PCB

¥ On-board Punch EQ with +18dB boost @ 45Hz.

¥ Tri-stage protection covers thermal, over-current and short circuits.