It makes sense comparing Yamaha YAS-109 vs LG SN9YG because they both are able to give some premium features. Based on our rating, YAS-109 has a total rating of 6.8 out of 10 versus 7 for SN9YG. The competitors' control buttons are different: power, volume down, volume up, input, microphone and power, volume down, volume up, function, play/pause, microphone, 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 5.1.2 for the LG SN9YG. The output power is different and equal to 120 W for the YAS-109 versus 520 (overall) W for the SN9YG. Only the Yamaha YAS-109 has a built-in subwoofer. The YAS-109 has a wired and wireless connection to separate subwoofer, and the SN9YG - wireless. The Yamaha YAS-109 got our rating of 6 out of 10, and the LG SN9YG 8 for its audio features and specs.
Soundbars do not have AirPlay support. Spotify support is available on the YAS-109.
These models have the ability to connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. Each soundbar has 1/1 HDMI inputs/outputs. The HDMI Audio Return Channel (ARC) feature supports both devices. Both soundbars have a USB connector. For connectivity, each of the soundbars received a rating of 8/10.
App control is available in every soundbar. A built-in microphone is present in each model. Soundbars do not have Multi-room support.
Only the SN9YG has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the SN9YG. For multichannel surround Yamaha YAS-109 got a rating of 6, and LG SN9YG 10 out of 10.