LG GX vs Samsung HW-A650 comparison definitely makes sense. Based on our rating, GX has a total rating of 6.5 out of 10 versus 5 for HW-A650. The competitors' control buttons are different: power, volume down, volume up, function and power, source, demo, volume down, volume up, respectively.
Both soundbars have active amplification type. Soundbars have the same number of channels on 3.1. The output power is different and equal to 420 (overall) W for the GX versus 430 (overall) W for the HW-A650. Competitors do not have a built-in subwoofer. Rivals have wireless connection to separate subwoofer. Both models received our 7 rating of 10 for their audio features and specs.
Soundbars do not have AirPlay support. Spotify support not implemented in both soundbars.
Both models do not have WI-FI support. 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. For connectivity, each of the soundbars received a rating of 8/10.
App control is available for the GX. None of the models under consideration have a built-in microphone. Soundbars do not have Multi-room support.
Only the GX has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the GX. For multichannel surround LG GX got a rating of 10, and Samsung HW-A650 6 out of 10.