The Vizio V21-H8 vs Samsung Q910B 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 9.4 for Q910B.
Both soundbars have active amplification type. A significant difference between the units in the number of channels, the Vizio V21-H8 has 2.1 versus 9.1.2 for the Samsung Q910B. Competitors do not have a built-in subwoofer. The V21-H8 has a wired and wireless connection to separate subwoofer, and the Q910B - wireless. The Vizio V21-H8 got our rating of 6 out of 10, and the Samsung Q910B 9 for its audio features and specs.
Spotify support is available on the Q910B.
Only the Samsung Q910B can connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. The Vizio V21-H8 has 0/1 HDMI inputs/outputs versus 1/1 of the Samsung Q910B. The HDMI Audio Return Channel (ARC) feature supports both devices. Both soundbars have a USB connector. For connectivity, the V21-H8 received a rating of 6/10 versus 9/10, respectively. App control is available in every soundbar. A built-in microphone is present in each model. Soundbars do not have Multi-room support.
Only the Q910B has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the Q910B. For multichannel surround Vizio V21-H8 got a rating of 5, and Samsung Q910B 10 out of 10.