Philips ShowView DVDR70 Operating Instructions Manual page 28

At the back of the DVD recorder there is a digital audio output socket DIGITAL AUDIO
OUT for an coaxial cable.
These can be used to connect the following:
Digital multi-channel sound offers the best possible sound quality. You will
need a multi-channel A/V receiver or amplifier that supports at least one of
the audio formats of the DVD recorder (MPEG2, Dolby Digital and DTS).
Consult the operating instructions for your receiver to find out which audio
formats it supports.
a
b The receiver is not compatible with the digital audio format of the DVD
recorder. The audio format of the DVD disc is displayed in the status
window when you switch to anoter language. Playback in six-channel digital
surround sound is only possible if the receiver has a digital multi-channel
sound decoder.
Connecting additional devices