It makes sense comparing Yamaha SR-B20A vs LG SL9YG because they both are able to give some premium features. Based on our rating, SR-B20A has a total rating of 5.4 out of 10 versus 8 for SL9YG. The competitors' control buttons are different: volume down, volume up, power, source and power, volume down, volume up, play/pause, microphone, respectively.
Both soundbars have active amplification type. The output power is different and equal to 120 (overall) W for the SR-B20A versus 500 (overall) W for the SL9YG. Only the Yamaha SR-B20A has a built-in subwoofer. The SR-B20A has a wired connection to separate subwoofer, and the SL9YG - wireless. The Yamaha SR-B20A 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 support is available on the SL9YG.
Only the LG SL9YG can connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. The Yamaha SR-B20A has 0/1 HDMI inputs/outputs versus 1/1 of the LG SL9YG. 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 only on the SL9YG. 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 SR-B20A got a rating of 6, and LG SL9YG 8 out of 10.