Since you will generally be listening to your music out in the open, high power is a must for a clean and clear sound. Most marine receivers come with a built-in 4-way amplifier. If you like your music loud or just want to drown out the nautical background noise of the wind and waves then you might want to consider adding an external marine amp to your system.
Marine receivers are as powerful and feature-packed as their automotive cousins. Built-in Bluetooth® connectivity lets you stream music or make calls without taking your hand off the helm. Multiple USB and aux connections let you enjoy your entire music collection by plugging in a Smartphone thumb drive or MP3 player. Aftermarket marine receivers have everything you need to stay entertained on the water.