Sound Motion - deeper more powerful bass response. Dolby Atmos - envelops you in 9.1.4 spatial audio experience. Voice enabled with Sonos voice control. WiFi and Bluetooth makes it easy to stream music and more. Trueplay optimizes sound for unique acoustics of the room. Speech Enhancement uses AI to detect voices and clarify dialogue. Night Sound reduces intensity of loud noises. HDMI eARC. Apple AirPlay 2. Touch controls. Sonos app control. 15 Amplifiers 7 Tweeters 6 Midwoofers 4 Woofers.