It makes sense comparing LG GX vs Samsung HW-A450 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 4 for HW-A450. 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. A significant difference between the units in the number of channels, the LG GX has 3.1 versus 2.1 for the Samsung HW-A450. The output power is different and equal to 420 (overall) W for the GX versus 300 (overall) W for the HW-A450. 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 Samsung HW-A450 5 for its 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. Only the GX supports HDMI Audio Return Channel (ARC). For connectivity, the GX received a rating of 8/10 versus 5/10, respectively.
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-A450 6 out of 10.