It includes two mini-HDMI inputs , one mini-HDMI output (supporting HDMI ARC ), and two optical audio inputs. Performance: Audio and "3D Sound"
The HW-D550 delivers a total of 310 watts of power (80W per channel for the bar and 150W for the sub). Samsung Soundbar Hw D550 Review
It performs decently for casual music listening, though some "purists" may find the virtual surround modes slightly unnatural for stereo tracks. Pros and Cons Customer reviews of the Samsung HW-D550 - Crutchfield It includes two mini-HDMI inputs , one mini-HDMI
It uses Samsung's "3D Audio Depth" technology to simulate a surround sound experience. While it adds a sense of "roundness" and fullness to movie soundtracks, reviewers note it is not a true replacement for a physical 5.1-channel setup. Pros and Cons Customer reviews of the Samsung
The included 150W wireless subwoofer eliminates messy cable runs across the room, though it still requires its own AC power outlet.