Sonos Beam vs Sony HT-S400 comparison definitely makes sense. Based on our rating, Beam has a total rating of 6 out of 10 versus 4.4 for HT-S400.
Both soundbars have active amplification type. A significant difference between the units in the number of channels, the Sonos Beam has 3.0 versus 2.1 for the Sony 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 not implemented in both soundbars.
Only the Sonos Beam can connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. The Sonos Beam has 1/0 HDMI inputs/outputs versus 0/1 of the Sony HT-S400. Only the HT-S400 supports HDMI Audio Return Channel (ARC). For connectivity, the Beam received a rating of 6/10 versus 7/10, respectively. App control is available for the Beam. A built-in microphone is present only on the Beam. 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 Sonos Beam got a rating of 4, and Sony HT-S400 5 out of 10.