Quality audio begins with a clean signal from a well-engineered JL audio source unit. Our MediaMaster® JL audio marine source units are built to withstand the harsh marine environment while offering connectivity to all your media devices and multiple zone outputs that give you full control of the sound throughout your boat. Each Mediamaster® model features a beautiful high-brightness, full-color LCD designed to be visible in bright sunlight. We also offer stand-alone Bluetooth® receivers, for smaller vessels or other applications requiring great-sounding wireless connectivity. Rediscover the beauty of entertainment in this one-of-a-kind, A-grade audio marine source unit. Your playlists will sound amazing!