The Sonos Multi-Room Music System is a set of appliances that replaces the home stereo system. The components together form a zoned hi-fi to play the same or different sounds. The center of the system is the "ZonePlayer", which also serves as a wireless hub. The stereo is controlled by wireless network. The Multiple ZonePlayers automatically detect each other and are synchronized to play the same music in different locations. The system can also play files from a computer with Microsoft Windows or Macintosh. The ZonePlayers has ethernet jacks that can be used as a virtual ethernet connection for network traffic.

1. Founded: 2002
2. Launched: January 2005
3. Founder & CEO: John MacFarlane
4. HQ: Santa Barbara, CA
5. Employees: 80 (2006)

• built-in stereo amplifier: 50 watts x 2 into 8 ohms (20-20,000 Hz) at 0.02% THD
• 4-port Ethernet switch
• binding-post speaker terminals
• subwoofer output
• 10-3/16"W x 4-1/2"H x 8-1/4"D

ZP80:

• 2-port Ethernet switch
• coaxial and optical digital audio outputs
• 5-7/16"W x 2-15/16"H x 5-3/8"D