It makes sense comparing VIZIO SB4451-C0 vs LG SL9YG because they both are able to give some premium features. Based on our rating, SB4451-C0 has a total rating of 6.4 out of 10 versus 7.4 for SL9YG. The competitors' control buttons are different: power, input, Bluetooth, volume down, volume up and power, volume down, volume up, play/pause, microphone, respectively.
Both soundbars have active amplification type. A significant difference between the units in the number of channels, the VIZIO SB4451-C0 has 5.1 versus 4.1.2 for the LG SL9YG. Competitors do not have a built-in subwoofer. Rivals have wireless connection to separate subwoofer. Both models received our 8 rating of 10 for their audio features and specs. Both models support Google Play Music. Spotify is available on each of the soundbars.
These models have the ability to connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. The VIZIO SB4451-C0 has 1/0 HDMI inputs/outputs versus 1/1 of the LG SL9YG. The HDMI Audio Return Channel (ARC) feature supports both devices. Both soundbars have a USB connector. For connectivity, the SB4451-C0 received a rating of 8/10 versus 7/10, respectively. App control is available in every soundbar. A built-in microphone is present only on the SL9YG. Soundbars do not have Multi-room support.
Only the SL9YG has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the SL9YG. Compared devices do not have DTS Virtual:X support. For multichannel surround VIZIO SB4451-C0 got a rating of 2, and LG SL9YG 7 out of 10.
The LG SL9YG is better soundbar in this comparison. Check LG SL9YG price