https://www.theguardian.com/technology/2018/feb/15/sonos-one-review-best-smart-speaker-audiophiles-amazon-alexa

The company’s first foray into smart tech adds Amazon’s Alexa to a great wireless speaker to create a formidable combo

Having practically invented the multi-room wireless speaker category in 2005, Sonos has lagged behind in the race to become smart. Now the Sonos One is here, packing Alexa in the top and premium audio in the bottom.