LG SN9YG vs Denon DHT-S217 comparison definitely makes sense. Based on our rating, SN9YG has a total rating of 7 out of 10 versus 4.8 for DHT-S217. The competitors' control buttons are different: power, volume down, volume up, function, play/pause, microphone 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 SN9YG has 5.1.2 versus 2.1 for the Denon DHT-S217. The output power is different and equal to 520 (overall) W for the SN9YG versus 40 (overall) W for the DHT-S217. Only the Denon DHT-S217 has a built-in subwoofer. The SN9YG has a wireless connection to separate subwoofer, and the DHT-S217 - wired. The LG SN9YG got our rating of 8 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.
Only the LG SN9YG 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. For connectivity, the SN9YG received a rating of 8/10 versus 7/10, respectively. App control is available in every soundbar. A built-in microphone is present only on the SN9YG. 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 SN9YG. For multichannel surround LG SN9YG got a rating of 10, and Denon DHT-S217 5 out of 10.