Sony Playstation 3 Quick Reference page 9

Step 2: Connect digital audio devices
You can connect audio devices that support digital audio output,
such as an AV receiver for home entertainment use.
Hint
When connecting a digital audio device to the system, go to
(Sound Settings) "Audio Output Settings", and adjust the settings as
necessary for the audio device.
Audio output on the PS3™ system
The supported channels may vary depending on the output
connector to be used.
PS3™ system output connectors
AV MULTI OUT connector
DIGITAL OUT (OPTICAL)
connector * 1
HDMI OUT connector
1
* Audio from a Super Audio CD cannot be output from the DIGITAL OUT
(OPTICAL) connector.
* 2 A device compatible with Linear PCM 7.1 Ch. is required to output 7.1 Ch.
audio from the HDMI OUT connector.
* 3 This system does not support output from the DTS-HD 7.1 Ch. DTS-HD 7.1
Ch audio is output from a 5.1 or lower channel.
(Settings)
Channels that can be used for output
2 Ch. 5.1 Ch. 7.1 Ch.
  
  
   *
2
*
Connecting with an optical cable
The audio will be output from the optical cable. The picture will be
output from the video output cable.
Optical cable for audio
(sold separately)
3
Digital audio device
such as an AV receiver
Getting started
Setting up the PS3™ system
Video output cable
for the TV in use
( page 7)
TV
9