Denon AVC-S660H Owner's Manual page 35

Contents Connections
Connection 2 : TV equipped with an HDMI connector and incompatible with the ARC
(Audio Return Channel) / eARC (Enhanced Audio Return Channel)
Use an HDMI cable to connect the TV to this unit.
To listen to audio from TV on this unit, use an optical cable to connect the TV to this unit.
Front panel Display
Playback Settings
TV
OUT IN
OPTICAL HDMI
OUT
IN
35
Rear panel
Tips
Remote Index
Appendix