The Samsung HW-B73MD is a 5.1-channel home theater soundbar system featuring an external wireless subwoofer and simulated surround sound processing.Key Technical SpecificationsAudio Channels: 5.1 Channels (simulated or distributed configuration)Power Output: 220W : Optimized for DTS Virtual:X spatial audio processingConnectivity Options: Features built-in Bluetooth alongside HDMI ARC ports and dedicated optical inputsSubwoofer Type: Includes an external, wireless subwoofer with a dedicated Bass Boost sound mode