Sony HT-X8500 vs Sony HT-S400 comparison definitely makes sense. Based on our rating, HT-X8500 has a total rating of 6 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. Only the Sony HT-X8500 has a built-in subwoofer. Both models received our 6 rating of 10 for their audio features and specs.
Soundbars do not have AirPlay support. Spotify support not implemented in both soundbars.
Both models do not have WI-FI support. Rivals from our review have Bluetooth support. The Sony HT-X8500 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 HT-X8500 received a rating of 8/10 versus 7/10, respectively.
Compared soundbars have no app control. None of the models under consideration have a built-in microphone. Soundbars do not have Multi-room support.
Only the HT-X8500 has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the HT-X8500. For multichannel surround Sony HT-X8500 got a rating of 10, and Sony HT-S400 5 out of 10.