The Alexa Voice Remote feature comes integrated into the Amazon Firestick, allowing you to perform all manner of actions. This includes searching for shows, music, and movies as well as launching apps and adjusting the soundbar using only voice command recognition courtesy of the AI technology available from Amazon.
For instance, if you’re looking for a classic comedy to watch all you have to do is say, “Alexa, find Charlie Chaplin movies” and you’re good to go.
On the other hand, the Roku stick has a Roku mobile app that is available for free and supports voice search. However, this feature is not available for the Premier and Express Roku series.