The Boat Amplifier R904 developed by Riviera is the latest evolution in the field of Sea Sound. Aware that by now everyone has at least a smartphone, tablet and/or a PC, you can listen to your music on the boat using the Bluetooth protocol data. Stop with holes on the control panel building-in touch panel, car radio, wiring and accessories: install the Boat Amplifier R904 will require minimal time and will allow you to listen to your favorite songs with a deep and clean sound, thanks to its 80 Watt RMS for channel and the ability to connect up to 8 speakers (4 Ohm) between left and right channels; or you can create a connection with 4 speakers and install a Subwoofer for powerful and deep bass. The builtin controls on the panel of the Boat Amplifier R904 allow you to adjust and equalize the sound quality.