LG SC9S vs Sony HT-S400 comparison definitely makes sense. Based on our rating, SC9S has a total rating of 6.4 out of 10 versus 4.4 for HT-S400.
Both soundbars have active amplification type. Soundbars have the same number of channels on 2.1. The output power is different and equal to 310 (overall) W for the SC9S versus 330 (overall) W for the HT-S400. Competitors do not have a built-in subwoofer. Rivals have wireless connection to separate subwoofer. Both models received our 6 rating of 10 for their audio features and specs.
Spotify support is available on the SC9S.
Only the LG SC9S can connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. The LG SC9S has 1/1 HDMI inputs/outputs versus 0/1 of the Sony HT-S400. 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 7/10.
App control is available for the SC9S. None of the models under consideration have a built-in microphone. Soundbars do not have Multi-room support.
Only the SC9S has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the SC9S. For multichannel surround, each of the opponents received 5 points out of 10.