Amazon.com: Denon AVR4810CI 9.3-Channel Multi-Zone Home Theater Receiver with Networking Capability and 1080p HDMI Connectivity (Discontinued by Manufacturer) : Electronics
Denon AVR-4810CI Home theater receiver with built-in Wi-Fi® at Crutchfield
Denon AVR-4810CI Home theater receiver with built-in Wi-Fi® at Crutchfield
User manual Denon AVR-4810 (English - 144 pages)
denon avr-4520 next to avr-4810 rear panel - YouTube