The Sony HT-A3000 immerses you in authentic surround sound with a center speaker for clear dialogue and a built-in dual subwoofer for impressive power. With optional rear speakers, it supports 360 Spatial Sound Mapping, so you can lose yourself in your favorite movies, TV shows, and music. Utilizing a combination of techniques such as Vertical Surround Engine, S-Force Pro Front Surround, and 360 Spatial Sound Mapping, the HT-A3000 offers an immersive sound that comes from all around you. Dolby Atmos® and DTS: X® lend a more realistic, multi-dimensional sound to your content. With optional rear speakers added, 360 Spatial Sound Mapping technology creates a sound field optimized for your unique space enveloping you in sound from multiple phantom speakers1,2. And with a wide listening area, everyone gets the same sound experience. With Sound Field Optimization, the HT-A3000 can be calibrated to your unique room environment. Even if you move the soundbar to another room, you can use the calibration to optimize the sound for the new space. The HT-A3000 3.1ch soundbar has three front speakers including a center speaker designed for clear dialogue and a built-in dual subwoofer for deep bass. With the Vertical Surround Engine and S-Force PRO Front Surround technology, the sound comes from all around you, maximizing the effects of Dolby Atmos® and DTS: X®.