https://www.theverge.com/circuitbreaker/2017/10/24/16535114/phorus-ps10-amazon-alexa-speaker-dts-play-fi

The Phoros PS10 is a new home speaker that features support for Amazon’s Alexa assistant, which would ordinarily relegate it to a pile of similar, Alexa-infused products if not for one thing: it’s the first Alexa device to support DTS Play-Fi for multi-room audio.

While DTS’s Play-Fi may not have the brand power of larger companies like Sonos, it’s still one of the more widely used wireless home audio standards around. So if you’ve already been building out your sound system around DTS’s standard, the PS10 might be worth a look for adding Alexa to the mix.