It makes sense comparing LG SN6Y vs LG SL9YG because they both are able to give some premium features. Based on our rating, SN6Y has a total rating of 6.2 out of 10 versus 8 for SL9YG. The competitors' control buttons are different: power, volume down, volume up, function 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 LG SN6Y has 3.1 versus 4.1.2 for the LG SL9YG. The output power is different and equal to 420 (overall) W for the SN6Y versus 500 (overall) W for the SL9YG. Competitors do not have a built-in subwoofer. Rivals have wireless connection to separate subwoofer. The LG SN6Y got our rating of 7 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. 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, the SN6Y received a rating of 8/10 versus 7/10, respectively.
Both models support voice control using Google Assistant. 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 LG SN6Y got a rating of 5, and LG SL9YG 8 out of 10.