JL Audio’s newest marine audio source unit, the MediaMaster® MM100s, is marine grade and weatherproof. This unit features advanced audio elements particular for marine use and application, such as audiophile-quality and preamp-level audio circuits. The MM100s is also arranged in an 8-channel architecture with 4V RMS outputs, offering excellent system control flexibility in a wide range of marine audio system configurations. MSRP $549.99; jlaudio.com