Released in 2009, the Play:5 was originally known as the S5. The Play:5 has a five driver speaker system and a two-port ethernet switch. Unlike the Play:3 and Play:1, the Play:5 also has a built-in 3.5mm headphone connection and line-in. Two Play:5 devices can be used to form a stereo pair.
The Play:5 is the biggest of the Sonos speakers (with the exception of the Playbar) and puts out amazing sound with a ton of bass.
The Sonos system and Play:5 can be controlled from a smartphone or computer using the free Sonos Controller apps. You can stream music from various internet services as well as iTunes or your personal media library.
The unit retails for $399.