These active on-wall* speakers have built-in amplifiers so don't require any external amplification and only need mains power. Connection options are dependant on the speaker type and model, but all feature some form of wireless connectivity for easy connection of mobile devices. These include Bluetooth, Wi-Fi, Airplay 2 and Chromecast. Wi-Fi compatible products will normally provide multi-room audio capabilities.
*Additional wall mount hardware may be required.