Fusion MS-RA770 Marine Radio System with MS-RA770RFK Retrofit Kit to replace Fusion 755,750,650 Series Radio

MS-RA770 - Digital Signal Processing (DSP): A technically superior listening experience made simple, Fusion DSP produces superior sound quality in every environment. MS-RA770 - Line Out 4 (1 x L + R per zone. Requires external amplification) - Subwoofer Out 4 (1 per zone. Requires external amplification) MS-RA770 - AM/FM/ Bluetooth / Apple AirPlay / Wi-Fi audio streaming / digital optical input / USB audio / AUX x2 / UPnP / MTP / SiriusXM-Ready (USA only, requires optional SiriusXM Connect vehicle tuner) MS-RA770 - Water Resistance (IPX rating) IPx7 from the front panel when installed correctly. MS-RA770RFK - Compatible with: MS-RA770