Mitch,
The S90D TV has 70-Watt 4.2.2 Channel sound with Dolby Atmos, as well as OTS+ (Object Tracking Sound+) which uses strategically placed speakers, allowing you to hear what happens where it happens, with sound that flows from all sides of the TV — including the center — to track the on-screen action with pinpoint accuracy for an enhanced, realistic 3D experience.
~ Samsung Pro