LG GX vs Vizio V21-H8 review

Votes 1 1
Rating 5 5

LG GX vs Vizio V21-H8 comparison chart

LG GX vs Vizio V21-H8 review

Vizio V21-H8

I had a chance to test and compare two models: LG GX vs Vizio V21-H8 and this review should help people who are looking for a good soundbar. The LG GX was rated 6.5, while the Vizio V21-H8 has a rating 5.5. The soundbars are equipped with a different number of buttons, power, volume down, volume up, function for the GX and power, volume down, volume up, source, Bluetooth for the V21-H8.

Audio features

Each of the models under consideration has active amplification type. A noticeable difference is the number of channels that GX has 3.1 and V21-H8 has 2.1. The built-in subwoofer is not implemented in any of these models. An external subwoofer connects to the GX via wireless, but V21-H8 has wired and wireless connection type. Rate 7 out of 10 received the LG GX for audio features and specs, but the Vizio V21-H8 received 6 out of 10.

Streaming services

Soundbars do not have AirPlay support. The units in this comparison do not support Spotify.


Both models do not have a wireless Wi-Fi interface. Soundbars from this comparison have Bluetooth support. There are 1/1 HDMI inputs/outputs in the LG GX versus 0/1 HDMIs in the Vizio V21-H8. As in the GX, so in the V21-H8 there is the HDMI Audio Return Channel (ARC). Connecting devices via USB is possible in both models. We rated the connectivity of the GX at 8 out of 10, while the V21-H8 was rated 6/10. Each of the soundbars can be controlled using the application. The Vizio V21-H8 equipped with a microphone. The models under consideration cannot become part of a multiroom system.

Multichannel surround

Dolby Atmos audio decoder is onboard the GX. The GX can work with surround sound due to DTS:X support. The GX was rated 10/10, while the V21-H8 received a mark of 5/10 for multichannel surround.

Advantages LG GX over Vizio V21-H8

  • Compatible with Dolby Atmos
  • Compatible with DTS:X

Advantages Vizio V21-H8 over LG GX

  • Microphone
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Vizio V21-H8