Yamaha YAS-109 vs Sony HT-S400 comparison definitely makes sense. Based on our rating, YAS-109 has a total rating of 8 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 120 (overall) W for the YAS-109 versus 330 (overall) W for the HT-S400. Only the Yamaha YAS-109 has a built-in subwoofer. The YAS-109 has a wired connection to separate subwoofer, and the HT-S400 - wireless. The Yamaha YAS-109 got our rating of 5 out of 10, and the Sony HT-S400 6 for its audio features and specs.
Spotify support is available on the YAS-109.
Only the Yamaha YAS-109 can connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. The Yamaha YAS-109 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, the YAS-109 received a rating of 8/10 versus 7/10, respectively.
App control is available for the YAS-109. A built-in microphone is present only on the YAS-109. Soundbars do not have Multi-room support.
None of soundbars equipped with Dolby Atmos multichannel audio decoder. The soundbars do not support the surround sound technology DTS:X. For multichannel surround Yamaha YAS-109 got a rating of 8, and Sony HT-S400 5 out of 10.