The Sonos line-up consists of five speakers a few accessories, but if you have some of these already, you don’t need to know this. All you need to know is that from this week, your Sonos has the possibility to sound even better.

Owners of the Sonos Play:1, Play:3, and either the old Play:5 or the new Play:5 may find their speakers sounding a lot better provided they have an iPhone, iPad, or iPod Touch in their home, and that’s thanks to an update rolling out across Sonos devices.

Called “Trueplay”, it’s a calibration system for speakers that allows an Apple iDevice to measure speaker sound, distance, and falloff by using a microphone found in an Apple iDevice and a test sound emitted by a Sonos speaker.

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“Trueplay is a major step in Sonos’ mission to bring music fans a great experience at home without compromises. And we believe a great experience is one that also stays current,” said Marc Whitten, Chief Product Officer at Sonos.

“The original Play:5 now features Trueplay, so a speaker that was released more than six years ago is going to have its best year yet after it was discontinued.”

During our time with the new Play:5, we didn’t find it made a lot of difference to speakers around our home, but rooms with greater reflectivity like the bathroom certainly made a difference, with a less hollow sound once configured with Trueplay.

That said, your experience may totally differ, as there’s more to Trueplay working than just what speaker you use it on, such as room design, materials, and speaker placement.