I seen this awhile back.
It is a lazy manufacturing way of not offering much at all. Because you are using everything from you phone/tablet. Which by the way, if you use your phone you run into all the things the SONOS commercials make fun of with these type systems.

Other red flags: You can not download any manuals or firmware from their site. Support tab is just Q&A.

I hope it is dirt cheap. Because you can take any amp and throw a $35 Chromecast Audio on each input and you have the same thing.

I'll pass.