Photo: You'll now be able to pump up the volume in a new way on your Moto Z and Moto Z2 smartphones thanks to a more affordable speaker Moto Mod attachment. The new Moto Stereo Speaker is now available in the US for $59 (about £42, AU$76), giving you a cheaper way to outfit your Moto Z with loud stereo sound out the back. Like other Moto Mods, this one simply snaps onto the back of the phone, and will handle all the audio from there. There’s no need to set up a Bluetooth connection. A built-in kickstand will make it easy to set up a small-screen movie or TV show viewing experience.