Yamaha MusicCast BAR 400 vs Polk Audio SIGNA S2 comparison definitely makes sense. Based on our rating, MusicCast BAR 400 has a total rating of 8.2 out of 10 versus 5 for SIGNA S2. The competitors' control buttons are different: power, volume down, volume up, input, mute and power, volume down, volume up, source, Bluetooth, respectively.
Both soundbars have active amplification type. A significant difference between the units in the number of channels, the Yamaha MusicCast BAR 400 has 5.1 versus 2.1 for the Polk Audio SIGNA S2. Competitors do not have a built-in subwoofer. Rivals have wireless connection to separate subwoofer. The Yamaha MusicCast BAR 400 got our rating of 7 out of 10, and the Polk Audio SIGNA S2 6 for its audio features and specs.
The Yamaha MusicCast BAR 400 has support AirPlay 2, and its competitor in our comparison has AirPlay. Spotify support is available on the MusicCast BAR 400.
Only the Yamaha MusicCast BAR 400 can connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. The Yamaha MusicCast BAR 400 has 1/1 HDMI inputs/outputs versus 1/0 of the Polk Audio SIGNA S2. The HDMI Audio Return Channel (ARC) feature supports both devices. For connectivity, the MusicCast BAR 400 received a rating of 8/10 versus 6/10, respectively. Compared soundbars have no app control. A built-in microphone is present only on the MusicCast BAR 400. Multi-room is only available for the Yamaha MusicCast BAR 400.
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 MusicCast BAR 400 got a rating of 6, and Polk Audio SIGNA S2 4 out of 10.