The Vizio V51-H6 vs VIZIO SB46514-F6 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 7.6 for SB46514-F6. The competitors' control buttons are different: power, volume down, volume up, source, Bluetooth and power, volume down, volume up, input, Bluetooth, 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 5.1.4 for the VIZIO SB46514-F6. Competitors do not have a built-in subwoofer. The V51-H6 has a wired and wireless connection to separate subwoofer, and the SB46514-F6 - wireless. Both models received our 7 rating of 10 for their audio features and specs. Spotify support not implemented in both soundbars.
Only the VIZIO SB46514-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 1/1 of the VIZIO SB46514-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 in each model. Multi-room is only available for the VIZIO SB46514-F6.
Only the SB46514-F6 has a Dolby Atmos multichannel audio format support. The soundbars do not support the surround sound technology DTS:X. For multichannel surround Vizio V51-H6 got a rating of 5, and VIZIO SB46514-F6 7 out of 10.