It makes sense comparing Yamaha YAS-209 vs LG SL9YG because they both are able to give some premium features. Based on our rating, YAS-209 has a total rating of 6.4 out of 10 versus 8 for SL9YG. The competitors' control buttons are different: power, volume down, volume up, input, microphone and power, volume down, volume up, play/pause, microphone, respectively.
Both soundbars have active amplification type. A significant difference between the units in the number of channels, the Yamaha YAS-209 has 2.0 versus 4.1.2 for the LG SL9YG. The output power is different and equal to 200 W for the YAS-209 versus 500 (overall) W for the SL9YG. Competitors do not have a built-in subwoofer. Rivals have wireless connection to separate subwoofer. The Yamaha YAS-209 got our rating of 6 out of 10, and the LG SL9YG 8 for its audio features and specs.
Soundbars do not have AirPlay support. Spotify is available on each of the soundbars.
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 7/10.
App control is available in every soundbar. A built-in microphone is present in each model. Multi-room is only available for the LG SL9YG.
Only the SL9YG has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the SL9YG. For multichannel surround Yamaha YAS-209 got a rating of 6, and LG SL9YG 8 out of 10.