The first truly-affordable Sonos product appeared on Amazon for a short while before being pulled—and spotted by eagle-eyes. The all-in-one speaker system has been rumored for some time, but with Amazon's $300 listing it's looking a darn sight more realistic.
Little detail was added to the Amazon listing, but it does confirm the PLAY3US1BLK will play "digital music with HiFi sound with 3 driver speaker system, 3 digital amps, 1 tweeter, 2 mid range drivers and 1 bass radiator." Like all Sonos products, it can be added to so different songs can be played in different rooms (streamed over your new Spotify account, naturally), and controlled by iOS or Android products.
The all-in-one product weighs 7.7lbs and measures 12.3 x 9.5 x 8.6 inches. While availability wasn't mentioned on the listing, we're going to take a stab in the dark and say that Sonos should be announcing this pretty shortly. [Amazon via Engadget]