With a Sony soundbar, you get better sound for your television. Add a subwoofer to enjoy a deep bass. It produces and enhances the low bass tones. When you choose an expansion with rear speakers, you create a surround setup. That way, you're surrounded by sound and it feels like you're in the middle of the movie. Choose a soundbar with Dolby Atmos if you want to enjoy spatial audio. Dolby Atmos reflects the sound to your listening position via the ceiling and walls. As a result, you hear the sound from in front of you, the sides, and above.