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While not a dedicated smart hub, this Bluetooth speaker has as many or more supported gadgets and ecosystems as dedicated smart hubs.
There are two additional Echo devices: the Tap ($130) and the Dot ($90). Both allow for voice control of your smart home tech, however the Echo provides the best experience.
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Pros
Pro Alexa is a powerful personal assistant
Alexa works in a way similar to Siri and Google Now - you ask her a question and she'll find the answer for you. She can also do things for you, such as turning on your lights or locking your door or any other commands supported by connected hardware.
Alexa is activated purely through voice, and she can understand your voice even while playing music.
Pro It's also a Bluetooth speaker
The Echo also works as a Bluetooth speaker. It provides full 360 degree sound, and is more than loud enough to fill a room with sound. The audio clarity is pretty good as well.
In addition, Alexa can play music from one of many supported music streaming services including Amazon Music, Google Play All Access, Spotify, Pandora, TuneIn, iHeartRadio, and more.