It makes sense comparing VIZIO M51ax-J6 vs Samsung Q800B because they both are able to give some premium features. Based on our rating, M51ax-J6 has a total rating of 5.4 out of 10 versus 9.2 for Q800B.
Both soundbars have active amplification type. A significant difference between the units in the number of channels, the VIZIO M51ax-J6 has 5.1 versus 5.1.2 for the Samsung Q800B. Competitors do not have a built-in subwoofer. Rivals have wireless connection to separate subwoofer. The VIZIO M51ax-J6 got our rating of 7 out of 10, and the Samsung Q800B 8 for its audio features and specs.
Spotify support is available on the Q800B.
Only the Samsung Q800B can connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. Each soundbar has 1/1 HDMI inputs/outputs. The HDMI Audio Return Channel (ARC) feature supports both devices. Both soundbars have a USB connector. For connectivity, the M51ax-J6 received a rating of 8/10 versus 9/10, respectively.
App control is available for the Q800B. A built-in microphone is present only on the Q800B. Soundbars do not have Multi-room support.
Both devices have support for Dolby Atmos multichannel audio format. The surround sound technology DTS:X is supported by devices under review. For multichannel surround VIZIO M51ax-J6 got a rating of 8, and Samsung Q800B 10 out of 10.