I've been using Chromecast Audio devices in my house for something like 8 years now and they work perfectly. Some are just the audio device plugged into powered

I've been using Chromecast Audio devices in my house for something like 8 years now and they work perfectly. Some are just the audio device plugged into powered speakers, some are speakers with Chromecast built in. Unfortunately the CC Audios aren't made anymore but I think you can still use regular Chromecasts (possibly with an HDMI audio extractor if needed). The sync between devices has always been flawless for me.