It makes sense comparing LG GX vs JBL Bar 5.1 because they both are able to give some premium features. Based on our rating, GX has a total rating of 6.5 out of 10 versus 7.2 for Bar 5.1. The competitors' control buttons are different: power, volume down, volume up, function and power, volume down, volume up, input, respectively.
Both soundbars have active amplification type. A significant difference between the units in the number of channels, the LG GX has 3.1 versus 5.1 for the JBL Bar 5.1. The output power is different and equal to 420 (overall) W for the GX versus 510 (overall) W for the Bar 5.1. Competitors do not have a built-in subwoofer. Rivals have wireless connection to separate subwoofer. The LG GX got our rating of 7 out of 10, and the JBL Bar 5.1 8 for its audio features and specs. Spotify support is available on the Bar 5.1.
Both models do not have WI-FI support. Rivals from our review have Bluetooth support. The LG GX has 1/1 HDMI inputs/outputs versus 3/0 of the JBL Bar 5.1. 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. 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 JBL Bar 5.1 4 out of 10.