LG GX vs JBL BAR 300 comparison definitely makes sense. Based on our rating, GX has a total rating of 6.5 out of 10 versus 8.4 for BAR 300. The competitors' control buttons are different: power, volume down, volume up, function and power, volume down, volume up, 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 5.0 for the JBL BAR 300. The output power is different and equal to 420 (overall) W for the GX versus 260 (overall) W for the BAR 300. 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 300 6 for its audio features and specs.
Spotify support is available on the BAR 300.
Only the JBL BAR 300 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 GX received a rating of 8/10 versus 10/10, respectively.
App control is available in every soundbar. A built-in microphone is present only on the BAR 300. Soundbars do not have Multi-room support.
Both devices have support for Dolby Atmos multichannel audio format. A surround technology DTS:X is supported only by the GX. For multichannel surround LG GX got a rating of 10, and JBL BAR 300 7 out of 10.