SteelSeries ARENA 9 Product Information Manual page 11

AUXILIARY AUDIO INPUT
Plug a 3.5 mm Audio Cable into the Auxiliary
Input (22) on Arena 9 Subwoofer from your audio
device.
Please note: Auxiliary audio will mix with other
audio sources.
OPTICAL AUDIO INPUT
Connect a Toslink optical cable (not included)
from your audio device to the Optical Audio Input
(19) on the Subwoofer.
19 22
OPTICAL PASSTHROUGH
20
AUDIO OUTPUT
Connect a second Toslink optical cable (not
included) from the Subwoofer's Optical Audio
Passthrough (20) to another audio device. When
in headset mode, optical audio will pass to the
connected audio device.
10