Amplify the moment with an Apollo™ marine amplifier – designed specifically for use with your Fusion® DSP-enabled marine stereo and Fusion speakers. This powerful and efficient monoblock amplifier is the difference between hearing the music and feeling it. With an impressive 650-watt RMS (at 4 ohm), this amplifier is specifically designed to power a subwoofer. The Easy Tune feature automatically regulates audio settings for the best sound quality without manual adjustments (Requires setup using the Fusion-Link™ app on a compatible smartphone).