Set Up Multiroom Audio Playback with Amazon Echo Devices
Anleitung: Multiroom-Audio mit Amazon Echo einrichten | Tutonaut.de
Amazon.com: WiiM Mini AirPlay2 Wireless Audio Streamer, Multiroom Stereo, Preamplifier, Works with Alexa and Siri Voice Assistants, Stream Hi-Res Audio from Spotify, Amazon Music and More : Electronics
How to set up and use Amazon's Alexa multiroom music - The Verge
Amazon's new multi-room Alexa music feature lets Echo devices work in concert; Sonos, Bose and others coming soon – GeekWire