Review and Measurements of Chromecast Audio Digital Output | Audio Science Review (ASR) Forum
Archimago's Musings: MEASUREMENTS: Google Chromecast Audio - Part I: Analogue Output
The Chromecast Audio was perfect, and it's time for Google to bring it back - Android Authority
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
Chromecast audio - can anyone comment on sound quality? | Headphone Reviews and Discussion - Head-Fi.org