Sony STR-DN1060 Parts And Controls page 45

High-bandwidth Digital Content Protection System Revision 2.2 (HDCP 2.2).
To watch HDCP 2.2 protected content such as 4K content, connect these HDMI jacks to
jacks that support HDCP 2.2 on the TV and player. For details on whether the TV and player
are equipped with HDCP 2.2-compatible HDMI jack, refer to the operating instructions of the
connected device.
*
For STR-DN1060 only.
**
For STR-DN860 only.
When an HDCP 2.2 compatible HDMI jack on the TV is labeled "ARC" (*)
HDMI cable (not supplied)
*
The ARC (Audio Return Channel) function sends digital sound from a TV to the receiver using
only an HDMI cable.
When you want to watch HDCP 2.2 protected content and the non-HDCP
2.2 compatible HDMI jack on the TV is labeled "ARC"
If the HDMI jack on the TV is labeled ARC and is not HDCP 2.2 compatible, connect the
receiver to the HDCP 2.2 compatible HDMI jack on the TV using an HDMI cable. Then,
connect an optical digital cable to the optical output jack of the TV to listen to digital sound.