Sonos's Trueplay room-tuning technology is now available for everyone; just update your Sonos app from the App Store to begin the process. Once the updated app launches it will prompt you to do a firmware update to your entire Sonos system. After the quick firmware update is finished the Sonos app will walk you through its automated process of tuning your speakers. Using your iPhone's microphone the Sonos app is able to discern what, if any, EQ adjustments need to be made to each room of your Sonos system to bring you the Sonos signature sound. You can then tweak bass and treble from there to your liking. This is available for free for all models of Sonos PLAY:1, PLAY:3 and PLAY:5, regardless of age. For more information check out our recent Trueplay review.