The Vizio V51-H6 vs Samsung HW-A550 comparison proves that these soundbars have many common features. Based on our rating, V51-H6 has a total rating of 6 out of 10 versus 4.6 for HW-A550. The competitors' control buttons are different: power, volume down, volume up, source, Bluetooth and power, source, demo, volume down, volume up, respectively.
Both soundbars have active amplification type. A significant difference between the units in the number of channels, the Vizio V51-H6 has 5.1 versus 2.1 for the Samsung HW-A550. Competitors do not have a built-in subwoofer. The V51-H6 has a wired and wireless connection to separate subwoofer, and the HW-A550 - wireless. The Vizio V51-H6 got our rating of 7 out of 10, and the Samsung HW-A550 5 for its audio features and specs.
Soundbars do not have AirPlay support. Spotify support not implemented in both soundbars.
Both models do not have WI-FI support. Rivals from our review have Bluetooth support. The Vizio V51-H6 has 0/1 HDMI inputs/outputs versus 1/1 of the Samsung HW-A550. The HDMI Audio Return Channel (ARC) feature supports both devices. For connectivity, the V51-H6 received a rating of 6/10 versus 8/10, respectively. App control is available for the V51-H6. A built-in microphone is present only on the V51-H6. Soundbars do not have Multi-room support.
None of soundbars equipped with Dolby Atmos multichannel audio decoder. The soundbars do not support the surround sound technology DTS:X. For multichannel surround Vizio V51-H6 got a rating of 5, and Samsung HW-A550 6 out of 10.