Denon/Marantz oficially anounce upgrade program for the AVCX8500 and the AV8805 | AVForums
Marantz AV8805 15.2 XLR Pre/Pro Official Thread | AVS Forum
AVR-S970H - 8K video and 3D audio experience from a 7.2 channel receiver | Denon - US
Denon AVR-X6700H Home Theater AVR Review | Page 22 | Audio Science Review (ASR) Forum
Customer Reviews: Denon AVR-X4700H 9.2-channel home theater receiver with Wi-Fi®, Bluetooth®, Apple AirPlay® 2, and Amazon Alexa compatibility at Crutchfield