Connecting 4K Devices - Sony HT-ST9 Manuel D'instructions

When the TV's HDMI jack is labeled with ARC and
not compatible with HDCP 2.2
If your TV's HDMI jack is labeled with ARC and not compatible with
HDCP 2.2, connect the system to your TV's HDMI jack that is
compatible with HDCP 2.2 using an HDMI cable. Then, connect an
optical digital cable to the optical output jack of the TV to listen to
digital sound.
HDCP 2.2-
compatible
HDMI jack
HDMI cable
(High Speed HDMI Cable
with Ethernet, supplied)

Connecting 4K Devices

Connect a 4K device to the HDMI IN 1 jack of the Bar Speaker.
For details on whether the device is HDCP 2.2-compatible, refer to
the operating instructions supplied with the device.
Optical digital cable
(not supplied)
Note
One HDMI cable (High Speed HDMI Cable with Ethernet) is supplied with
this system.
Blu-ray Disc Player, cable box or
satellite box, etc.
HDCP 2.2-
compatible
HDMI jack
HDMI cable
(High Speed HDMI Cable with Ethernet, supplied)
21
US