The Living LV-HUB is a multi source transmitter which wirelessly transmits your sound in CD quality to all Living loudspeakers. Living LV-HUB becomes the heart in your wireless multiroom sound system. Connect up to 4 audio sources & easily choose from which source you want to play. With dual optical inputs (TOSLink) you can connect your flat TV/ sat-cable receiver & at the same time have an Apple TV® connected for Air Play® music streaming. With the 3.5 mm stereo input you can connect any source with audio output (such as headphones out). Living LV-HUB transmits all audio in CD sound quality to all Living wireless speakers. So you can enjoy all your music & sound in best audio quality. & installation is super simple, no software installation or fuzz, just plug in & start playing your music wirelessly.