Chromecast Audio dongle has been discontinued. Found this to serve a Chromecast device with optical output. Just connect to a DAC then to an amp. You're good to go. : r/Chromecast
DIY Audio Casting
Google Chromecast Audio (3x) | AVS Forum
Will Google revive their almost perfect device Chromecast Audio
Google Chromecast Audio Review - Does India need it?
Archimago's Musings: MEASUREMENTS: Google Chromecast Audio - Part I: Analogue Output
Review and Measurements of Chromecast Audio Digital Output | Audio Science Review (ASR) Forum
Google's Chromecast Audio Has Been Discontinued | Ubergizmo
Chromecast Audio review: Give your old speakers a new brain | Engadget
Is There a New Google Chromecast Audio Coming or Another TV Streamer? - ecoustics.com
Google announces Chromecast and Chromecast Audio for $35 - Neowin
Google Announces Chromecast (2) & Chromecast Audio
Google discontinues Chromecast Audio, but you can grab one for $15 now - The Verge
Google Chromecast Audio Reviews, Pros and Cons | TechSpot
File:Chromecast Audio.jpg - Wikipedia
Qoo10 - Bringing the best to you
Chromecast Audio review - Liliputing
Google has killed the Chromecast Audio – here's how to buy it before it's too late | Expert Reviews
6 Ways to Troubleshoot Chromecast Audio Issues
Going Wireless with Google's Chromecast Audio | Sound & Vision
Google Chromecast Audio review | What Hi-Fi?
Google pulls plug on Chromecast Audio | Darko.Audio
Google Chromecast Audio Upgrade | Digital Optical Cable - YouTube