Ray Features: All four Class-D digital amplifiers have been fine-tuned to the soundbar's unique acoustic architecture. Two tweeters create a crisp high-frequency response. Two high-efficiency midwoofers ensure faithful playback of mid-range frequencies and solid bass. Proprietary low-velocity port design minimises distortion and rounds out low-end frequencies. Use the Sonos app to adjust bass, treble, and loudness. This software measures the acoustics of the room then fine-tunes the soundbar. Supported iOS device required. Turn this setting on in the Sonos app to boost voice frequencies and clarify dialogue. Turn this setting on in the Sonos app to reduce the intensity of loud sounds and increase the level of quieter sounds. Stereo PCM, Dolby Digital 5.1* and DTS Digital Surround* (*This is not an indication of a licenced decoder.) The Sonos app's Now Playing screen will display what type of audio is being decoded. Specifications: Height: 2.79 in (71 mm) Width: 22 in (559 mm) Depth: 3.74 in (95 mm) Weight 4.29 lb (1.95 kg) Colours Black, White Finish Matte Mounting M5 threaded mounting socket Controls Use the capacitive touch controls on the product to adjust the volume, play, pause, skip, and replay. LEDs Lights on the product indicate connection and mute status. WiFi Connect to WiFi with any 2.4 GHz 802.11/b/g/n broadcast-capable router. Optical Connect to your TV's optical output with the included cable. Ethernet 10/100 port for hardwiring to your router Infrared (IR) Receiver Syncs the soundbar with your TV remote for streamlined control Voltage Auto-switching 100-240V 50/60Hz AC universal input CPU Quad Core 1.4 GHz A-53 Memory 1GB SDRAM 4GB NV Apple AirPlay 2 Works with AirPlay 2 on Apple devices iOS 11.4 and higher