What is multi-room audio: everything you need to know
DENON DRA-685 MULTI-ROOM AM FM STEREO RECEIVER | Premier Equipment Solutions, Inc.
August Wr320 Wifi Bluetooth Audio Receiver Wireless Music Optical Adapter For Airplay Spotify Dlna Nas Multiroom Sound Stream - Wireless Adapter - AliExpress
8-Zone Multi-Room Audio System | Outdoor Speaker Depot
XDA-QS5400RK MusicCast Multi-Room Streaming Amp - Yamaha USA
Amazon.com: Denon AV Receiver 8K 5.2ch, Home Cinema Amplifier, Alexa Compatible, Dolby DTS-HD, Bluetooth, AirPlay 2 and HEOS Built-in Multiroom Audio - AVC-S660H : Electronics