How To Connect Denon Bluetooth Headphones To An IPhone – GetNotifyR
Amazon.com: Denon AVR-S540BT 5.2 channel Receiver - 4K Ultra HD Audio Video, Bluetooth, USB port, Compatible with HEOS Link for Wireless Music Streaming (Discontinued by Manufacturer) : Everything Else
Pairing the HEOS device with your Bluetooth devices HEOS AVR
DENON AVR-S540BT 5.2-Ch x 70 Watts Bluetooth A/V Receiver | Accessories4less