Asus Xonar DS - Manual (Page 13)

7 ASUS Xonar DS
3.2 Connecting to a TV tuner card
1.
If you have a traditional PCI or PCI TV tuner card on your PC, you may need
to connect it to the Xonar DS card to send the tuner card’s sound to your PC
speakers.
2. Secure the PCI/PCI TV tuner card and screw it into the back-panel.
3. Connect the audio output header from the TV tuner card to the Aux-In header
of the Xonar DS card.
For optimum TV audio quality, Xonar DS uses ADC recording to digitize the
signal and loops it back to DAC playback. Select Aux-In as the recording source
in the Xonar DS Center’s recording mixer and enable the monitoring button
to pass this signal to the audio output. Using this setup, you can even turn on
sound effects such as Pro-Logic IIx to expand the stereo TV audio to 5.1 or 7.1
channel surround sound. TV audio on your PC will become even better than on
your TV set.