Vizio V51-H6 vs VIZIO SB3651-F6 comparison definitely makes sense. Based on our rating, V51-H6 has a total rating of 6 out of 10 versus 6.8 for SB3651-F6. The competitors' control buttons are different: power, volume down, volume up, source, Bluetooth and power, input, Bluetooth, volume down, volume up, respectively.
Both soundbars have active amplification type. Soundbars have the same number of channels on 5.1. Competitors do not have a built-in subwoofer. Rivals have wired and wireless connection to separate subwoofer. The Vizio V51-H6 got our rating of 7 out of 10, and the VIZIO SB3651-F6 8 for its audio features and specs.
Soundbars do not have AirPlay support. Spotify support is available on the SB3651-F6.
Only the VIZIO SB3651-F6 can connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. The Vizio V51-H6 has 0/1 HDMI inputs/outputs versus 1/0 of the VIZIO SB3651-F6. The HDMI Audio Return Channel (ARC) feature supports both devices. Both soundbars have a USB connector. For connectivity, the V51-H6 received a rating of 6/10 versus 8/10, respectively. App control is available in every soundbar. 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 VIZIO SB3651-F6 6 out of 10.