Yamaha YAS-109 vs LG SLM4R comparison definitely makes sense. Based on our rating, YAS-109 has a total rating of 6.8 out of 10 versus 5.2 for SLM4R. The competitors' control buttons are different: power, volume down, volume up, input, microphone and power, volume down, volume up, function, 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 4.1 for the LG SLM4R. The output power is different and equal to 120 W for the YAS-109 versus 420 (overall) W for the SLM4R. Only the Yamaha YAS-109 has a built-in subwoofer. The YAS-109 has a wired and wireless connection to separate subwoofer, and the SLM4R - wireless. The Yamaha YAS-109 got our rating of 6 out of 10, and the LG SLM4R 7 for its audio features and specs.
Soundbars do not have AirPlay support. 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. Only the YAS-109 supports HDMI Audio Return Channel (ARC). Both soundbars have a USB connector. For connectivity, the YAS-109 received a rating of 8/10 versus 6/10, respectively. App control is available in every soundbar. 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 LG SLM4R 5 out of 10.