Sony STR-DN1070 Operating Instructions Manual page 25

Connecting a TV incompatible with the Audio Return Channel (ARC)
function via an HDMI connection
It is not necessary to connect all the cables. HDMI connection for audio/video signals is required.
 Optical digital cable (not supplied)
 Audio cable (not supplied)
 HDMI cable (not supplied)
Audio signals
or
Audio/Video
signals
Recommended connection
Alternative connection
25 GB