https://www.theverge.com/2019/1/11/18178751/google-chromecast-audio-discontinued-sale

There’s nothing quite like Google’s Chromecast Audio — a tiny disc that lets you wirelessly sling music to practically any dumb speaker, even create multi-room audio configurations like a poor man’s Sonos setup, just by plugging into its 3.5mm line-out and adding some power over Micro USB.

And that’s why it’s such a shame Google is discontinuing the dongle today. The company provided The Verge (and Android Police, earlier) with this statement: