Devialet amplifiers can be controlled through the Devialet iPhone/iPad/iPod Touch app provided that they are equipped with the WiFi module. The Devialet app is available for free on the Apple App strore: https://itunes.apple.com/mo/app/devialet-d-premier-remote/id531633176?mt=8
It allows you to select a source, control the volume or mute the sound and to select the Devialet you want to control.
Additionally, this app allows you to stream directly to the Devialet. You simply need to open the app, tip on the source, select My Music, select the song(s) you want to play, press Done and the music will start.