Yamaha YAS-109 vs Polk Audio SIGNA S2 comparison definitely makes sense. Based on our rating, YAS-109 has a total rating of 6.8 out of 10 versus 5 for SIGNA S2. The competitors' control buttons are different: power, volume down, volume up, input, microphone 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 YAS-109 has 2.0 versus 2.1 for the Polk Audio SIGNA S2. Only the Yamaha YAS-109 has a built-in subwoofer. The YAS-109 has a wired and wireless connection to separate subwoofer, and the SIGNA S2 - wireless. Both models received our 6 rating of 10 for their 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 1/0 of the Polk Audio SIGNA S2. The HDMI Audio Return Channel (ARC) feature supports both devices. For connectivity, the YAS-109 received a rating of 8/10 versus 6/10, 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 6, and Polk Audio SIGNA S2 4 out of 10.