It makes sense comparing VIZIO SB3651-E6 vs LG SN9YG because they both are able to give some premium features. Based on our rating, SB3651-E6 has a total rating of 7.6 out of 10 versus 7 for SN9YG. The competitors' control buttons are different: power, input, Bluetooth, volume down, volume up and power, volume down, volume up, function, play/pause, microphone, respectively.
Both soundbars have active amplification type. A significant difference between the units in the number of channels, the VIZIO SB3651-E6 has 5.1 versus 5.1.2 for the LG SN9YG. Competitors do not have a built-in subwoofer. Rivals have wireless connection to separate subwoofer. The VIZIO SB3651-E6 got our rating of 7 out of 10, and the LG SN9YG 8 for its audio features and specs. Spotify support is available on the SB3651-E6.
These models have the ability to connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. The VIZIO SB3651-E6 has 1/0 HDMI inputs/outputs versus 1/1 of the LG SN9YG. The HDMI Audio Return Channel (ARC) feature supports both devices. Both soundbars have a USB connector. For connectivity, each of the soundbars received a rating of 8/10.
Both models support voice control using Google Assistant. 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 SN9YG has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the SN9YG. For multichannel surround VIZIO SB3651-E6 got a rating of 4, and LG SN9YG 10 out of 10.