The Vizio V21-H8 vs Samsung HW-A550 comparison proves that these soundbars have many common features. Based on our rating, V21-H8 has a total rating of 5.5 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. Soundbars have the same number of channels on 2.1. Competitors do not have a built-in subwoofer. The V21-H8 has a wired and wireless connection to separate subwoofer, and the HW-A550 - wireless. The Vizio V21-H8 got our rating of 6 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 V21-H8 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 V21-H8 received a rating of 6/10 versus 8/10, respectively. App control is available for the V21-H8. A built-in microphone is present only on the V21-H8. 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 V21-H8 got a rating of 5, and Samsung HW-A550 6 out of 10.