Fits into your favourite audio systemConnects to a home theater system or external amplifier Seamlessly integrates your home theater system and other audio devices into your Sonos Multi-Room Music System.Analog and digital audio output Enjoy superior audio quality with analog, optical and coaxial digital audio outputs engineered for premium performance. Fixed or variable audio output options provide flexible volume control.Tone and volume controls adjustable for each zone Optimize sound performance for each zone using zone-specific bass, treble, balance, and loudness controls. Adjust volume by individual zone or by groups of zones.Access all the music on EarthPre-loaded Internet radio stations - free of charge Get over 100,000 free radio stations, shows, and podcasts -- all for free. And you can tune in without turning on your computer. Browse for stations or type in specific call letters or a radio host you love.Endless music from the most popular online music services Sonos works seamlessly with Anubis.fm, AUPEO!, Deezer, iheartradio, Last.fm, MOG, Napster®, Pandora®, Rdio®, Rhapsody®, SiriusXMTM Internet Radio, Spotify®, Stitcher SmartRadio(tm), TuneIn, Wolfgang's Vault®, and downloads from any service offering DRM-free tracks. (Service availability varies by region.)Computer-free music playback Get instant access to millions of songs and thousands of radio stations - without ripping, downloading or turning on a computer. Sonos connects directly to these services over the Internet and then streams the music to the rooms of your choice.Play the music on your computer in any room Play music stored on up to 16 PCs, Macs or NAS (Network Attached Storage) devices on your home network, supporting the most popular audio formats, from iTunes® to MP3.Stream music from an iPhone®, iPadTM or iPod touch® Simply connect an Apple AirPort Express® to any ZonePlayer with line-in and experience true multi-room AirPlay®.Listen to music that's stored on an iPod or iPhone Dock, charge and wirelessly play the music from an iPod or iPhone with the Sonos DOCK (sold separately).Play music and audio from a CD or MP3 player, TV and more throughout the home An analog audio input lets you connect to an external audio source (such as a CD or MP3 player, TV, DVD, VCR, or radio) and play that music or audio on all ZonePlayers in the system.Other cool featuresWake up to music Set the alarm and wake up to your favorite music or Internet radio station in one room, or all over the house. Just hit snooze to get a few minutes more sleep. Fall asleep to soothing music with the sleep timer.Schedule your music Use the scheduler to play music at a specific time for a set duration - great for that 30-minute workout.Includes Sonos Desktop Controller software and setup software for your computer Control all your music and all your rooms from any computer or laptop in your house. Setup software facilitates music sharing so music folders on your hard drive can be shared across all ZonePlayers.Front-panel volume controls Provides quick access to volume and mute controls when you don't have a Controller in hand.Control it all with your smartphone, tablet and moreControl all your music and rooms with your AndroidTM smartphone, iPhone®, iPod touch®, and iPadTM Free Sonos Controller apps for Android, iPhone and iPad let you control your zone players, music on the Internet and your computer right from the palm of your hand. Download the apps for free on the iTunes App Store or Android MarketTM.Integrated, multi-room control If you have multiple players, you can control what music is playing in every room in your house, from anywhere in your house. Sonos Controllers aren't tied to a specific player, so you can use any Controller to control the music and the volume in all your rooms.Find and play your favorite songs in an instant Browse or search for songs and stations, choose the music, and control the volume from anywhere in the home.Wireless connectivity The Android smartphone, iPhone, iPod touch, and iPad connect to your Sonos system through your home WiFi network.