Denon DVD-9000 Operating Lnstructions page 55

e DVD-9000 can be used as a R/A converter by connecting it to an external digital component using the digital connectors.
Set the source selector to either "OPTICAL" or "COAXIAL".
appears in the track nurnber display section. The sampling
frequency of the external input signal is then displayed. ("- -" is
displayed if the sampling frequency cannot be detected.)
0 D/A conversion is only possible with 16- to 24-bit, 32 to 96 kHz PCM signal sources.
Dolby Digital and DTS etc. bitstream signals cannot be converted.
e When the source selector is set to "OPTICAL" or "COAXIAL", only the power button and the OPEN/CLOSE button will work.
e The stop mode is set if the source selector is switched to "OPTICAL" or "COAXIAL" during playback.
* Noise will be output if the digital data of a CD-ROM, etc., is input.
0 The digital data input from the digital input terminal is output from the digital output terminal as such.
(The data is output regardless of the "PURE DIRECT MODE" setting.)