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 4 channel amplifier is the difference between hearing the music and feeling it. With an impressive 150-watt RMS per channel (at 4 ohms), this amplifier can power up to four pairs of speakers or two pairs of speakers and one 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).