https://www.cnet.com/news/polks-new-sound-bar-is-frankensteins-alexa-voice-assistant/

While competitors have offered Alexa voice assistants with their own proprietary microphones, Polk has announced the first sound bar at CES 2018 with what is essentially an Echo Dot built into it: the Command Bar. 

The Command Bar integrates Amazon's own far-field microphones and controls into the speaker and you can use either to control your smart home as a fully-fledged Echo replacement. The onboard mics can also control audio functions such as volume, mute, EQ, and source selection.