It makes sense comparing Yamaha YAS-209 vs Samsung HW-LST70T because they both are able to give some premium features. Based on our rating, both soundbars have the same overall rating of 6.4. The competitors' control buttons are different: power, volume down, volume up, input, microphone and volume down, volume up, power, source, respectively.
Both soundbars have active amplification type. A significant difference between the units in the number of channels, the Yamaha YAS-209 has 2.0 versus 3.0 for the Samsung HW-LST70T. The output power is different and equal to 200 W for the YAS-209 versus 210 (overall) W for the HW-LST70T. Only the Samsung HW-LST70T has a built-in subwoofer. Rivals have wireless connection to separate subwoofer. Both models received our 6 rating of 10 for their audio features and specs.
Soundbars do not have AirPlay support. Spotify is available on each of the soundbars.
These models have the ability to connect to the Internet via WI-FI. Rivals from our review have Bluetooth support. The Yamaha YAS-209 has 1/1 HDMI inputs/outputs versus 1/0 of the Samsung HW-LST70T. Only the YAS-209 supports HDMI Audio Return Channel (ARC). Both soundbars have a USB connector. For connectivity, the YAS-209 received a rating of 7/10 versus 6/10, respectively.
Both models support voice control using Amazon Alexa. App control is available in every soundbar. A built-in microphone is present in each model. Multi-room is only available for the Samsung HW-LST70T.
None of soundbars equipped with Dolby Atmos multichannel audio decoder. The soundbars do not support the surround sound technology DTS:X. For multichannel surround Yamaha YAS-209 got a rating of 6, and Samsung HW-LST70T 5 out of 10.