https://www.techradar.com/news/first-look-amazon-echo-link-and-amp-could-take-over-the-audiophile-market

Echos are for people who want to set kitchen timers and listen to music through tiny speakers, right? Until Amazon's September event, that's how many music fans would have described Amazon's line-up of Alexa-powered Echo speakers. 

That's now all changed with Amazon's introduction of a clutch of hi-fi components – the Echo Input and Echo Sub, but more importantly, Echo Link and Echo Link Amp – that together have the potential to take Alexa to every speaker, amplifier, hifi and TV in every room in a house.