Dolby Atmos - stay immersed in multidimensionsal soundstage. Voice enabled with "Hey Sonos" Amazon Alexa or Google Assistant. Speech Enhancement for greater dialogue clarity. WiFi connectivity. Trueplay optimizes sound for unique acoustics of the room. TV remote sync. HDMI eARC. Apple AirPlay 2. Touch controls. Adjustable EQ with Sonos app. 5 Amplifiers 1 Tweeter 4 Midwoofers 3 Passive radiators. Ethernet port.