Constructed from UV and corrosion-resistant materials and finish, this amp is ready for the seas. Alpine's PDX series digital switch-mode amplification yields incredible sound quality. Advances include improved feedback circuitry that faithfully reproduces the input signal for improved dynamic range and higher fidelity. Unique design and quick-disconnect plugs allow clean, fast, and easy installation. Damping factor is 350% better than Class A/B amps. Stays efficient at all power levels. This produces less heat and eliminates the need for large heat sinks. Provides 600 watts RMS per channel.