The TCL Alto 9+ lets you bring cinema-quality sound home. Make all your entertainment more dynamic with Dolby Atmos technology, bringing you multi-dimensional sound that delivers depth and excitement for a more cinematic experience. Innovative RAY DANZ technology creates an incredibly immersive, ultra-wide soundstage. This also ensures a larger sweet spot, so you can enjoy amazing performance over a greater area. In addition to more immersive sound, enjoy clearer dialogue from the sound bar's center channelthat?s been tuned for optimal clarity. With the wireless subwoofer, you?ll enjoy extra bass to make movies and music truly come to life. Because it?s wireless, you can place the subwoofer virtually anywhere to adjust your exposure to huge, ground-shaking bass.Alto 9+ is the perfect addition to any home theater, but it?s Roku TV Ready for simple set up and control with your TCL Roku TV. You can also stream all your favorite music and podcasts from apps like Pandora, Spotify, TuneIn, and more, wirelessly from your smartphone, tablet, or laptop with Bluetooth wireless technology.Enjoy your favorite entertainment even more with three distinct listening modes ?Movie, Music, and TV. The Movie mode lets you hear the dialogue with precise clarity and feel theimpact of punches or explosions in intense action scenes. Music mode enables you to hear instruments, vocals, and bass with pristine accuracy. TVmode isolates ambient sound from speech, enabling you to focus on content without getting distracted by background noise.