Studio Quality The high-fidelity speaker for superior sound. Experience vividly clear, room-filling sound for music streaming, vinyl, and more. Enjoy control with the app and Apple AirPlay 2.  FEATURES Six Class-D digital amplifiers perfectly tuned to the speaker's acoustic architecture. Three midwoofers ensure faithful playback of vocal frequencies in addition to rich bass without distortion, even at high volumes. Three tweeters, including one center tweeter and two precisely angled side tweeters, create a crisp high-frequency response. Phased array creates a wide stereo soundstage that directs sound to the left, right, and center. Analog line-in with 3.5 mm jack for connecting another device. Trueplay™ software dynamically tunes the speaker to the unique acoustics of the room. iOS device required. Adjustable EQ settings in the app, including bass, treble, and loudness. TECHNICAL SPECS Dimensions - H x W x D:  8.03 x 14.33 x 6.06 in. Weight:  14 lbs. (6.36 kg) Power supply:  Auto-switching 100-240 V, 50-60 Hz AC universal input. Ethernet Port:  1 10/100 Mbps ethernet port. Wire directly to your router if WiFi is unreliable. WiFi:  Connects to your home WiFi network with any 802.11b/g, 2.4 GHz broadcast-capable router. Sonos S2:  Download the latest generation of the app to set up and control. Apple AirPlay 2:  Works with AirPlay 2 on Apple devices iOS 11.4 and higher. CPU:  Quad Core 1.3 GHz Memory:  1GB SDRAM 4GB NV IN THE BOX Five, Power Cable, QuickStart Guide, Legal & Warranty Information