This is the room-mapping sound bar designed with German engineering by Sennheiser, a name long appreciated by audiophiles for superior sound. It uses virtualization technology to create a surround-sound like experience by adjusting audio levels specific to your family room or home theater. Using an included calibration microphone, it assesses the angles and location of your walls, ceiling, and furniture, and adjusts output accordingly to provide an immersive experience. It provides crystal clear sound quality via 13 high-end drivers—five 1" aluminum dome tweeters, two 3 1/2" full-range drivers, and six 4" sandwich cone woofers, producing a precise range of highs and lows. It can also be used as a Bluetooth speaker and has a frequency response between 30 Hz and 20,000 Hz. Operated via remote control or a free iOS/Android app. AC plug. 49 1/2" W x 6 3/4" D x 5 1/2" H. (40 lbs.)