Fusion Apollo Series 1100 Watt Monoblock Marine Amplifier

The Fusion Apollo Series monoblock marine amplifier is one of the best sounding and most powerful subwoofer amplifiers you can put in your boat. There's only one catch. You have to use a Fusion Apollo Series head unit. The Fusion Apollo series head units are the best head units you can install in your boat, so that's not a huge issue.