Amazon.com: WiiM Pro AirPlay 2 Receiver, Chromecast Audio, WiFi Multiroom Streamer, Compatible with Alexa, Siri and Google Assistant, Stream Hi-Res Audio from Spotify, Amazon Music, Tidal and More : Electronics
All Chromecasts can now be used for multi-room audio - FlatpanelsHD
Google Chromecast Audio with Multi-room Support Review (Updated) - free time
All Chromecasts can now be used for multi-room audio - FlatpanelsHD
WiiM's Mini and Pro are the Chromecast Audio's real replacement - The Verge
Google Chromecast: Multi-Room-Funktion für Video-Sticks - teltarif.de News
Chromecast Audio review: The ultimate audio streaming dongle is better than ever - CNET