Vizio V21-H8 vs Denon DHT-S217 comparison definitely makes sense. Based on our rating, V21-H8 has a total rating of 5.5 out of 10 versus 4.8 for DHT-S217. The competitors' control buttons are different: power, volume down, volume up, source, Bluetooth and power, source, demo, volume down, volume up, respectively.
Both soundbars have active amplification type. Soundbars have the same number of channels on 2.1. Only the Denon DHT-S217 has a built-in subwoofer. The V21-H8 has a wired and wireless connection to separate subwoofer, and the DHT-S217 - wired. The Vizio V21-H8 got our rating of 6 out of 10, and the Denon DHT-S217 4 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. The Vizio V21-H8 has 0/1 HDMI inputs/outputs versus 1/1 of the Denon DHT-S217. The HDMI Audio Return Channel (ARC) feature supports both devices. For connectivity, the V21-H8 received a rating of 6/10 versus 7/10, respectively. App control is available in every soundbar. A built-in microphone is present only on the V21-H8. Soundbars do not have Multi-room support.
Only the DHT-S217 has a Dolby Atmos multichannel audio format support. The soundbars do not support the surround sound technology DTS:X. For multichannel surround, each of the opponents received 5 points out of 10.