A software trick will make your Sonos sound better than ever
 

If you're feeling envious of Sonos' new flagship speaker, the company has some good news in the form of Trueplay. It's a new feature coming to the Sonos iOS app that will make your old speakers sound better through calibration, and it works really...

http://www.engadget.com/2015/09/29/s...y-calibration/