The Vizio V21-H8 vs LG SC9S comparison shows that these models have some important differences and common features. The Vizio V21-H8 was rated 5.5, while the LG SC9S has a rating 6.4.
Each of the models under consideration has active amplification type. By the number of channels, the devices do not differ. The built-in subwoofer is not implemented in any of these models. An external subwoofer connects to the V21-H8 via wired and wireless, but SC9S has wireless connection type. Audio features and specs of considered models we rated 6 out of 10 in our ranking.
The SC9S can play audio from Spotify.
Wireless Internet connection is realized only in the SC9S. Soundbars from this comparison have Bluetooth support. There are 0/1 HDMI inputs/outputs in the Vizio V21-H8 versus 1/1 HDMIs in the LG SC9S. As in the V21-H8, so in the SC9S there is the HDMI Audio Return Channel (ARC). Connecting devices via USB is possible in both models. We rated the connectivity of the V21-H8 at 6 out of 10, while the SC9S was rated 7/10. Each of the soundbars can be controlled using the application. The Vizio V21-H8 equipped with a microphone. The models under consideration cannot become part of a multiroom system.
Dolby Atmos audio decoder is onboard the SC9S. The SC9S can work with surround sound due to DTS:X support. The same score of 5/10 was put to the soundbars for multichannel surround support.