Cable Box Digital 5.1 converted to Digital Stereo

Some cable boxes have the option to choose lpcm output. Get to your audio settings and give it a try with your dac.

You may not have the option.

Labtec, Thank you for your response. My cable box provides no option.

Having the digital cable from the cable box plugged in to my Dac gives me a static signal.
I guess you would say my cable box outputs Bitstream that requires it to be decoded into a PCM signal.

So far, I have not found any type of add on decoders.

First, the signals are stereo as Dolby 2.0, so the conversion needed is to PCM 2.0.

Second, it is questionable whether these signals will benefit much (if at all) from the use of a good external DAC.

Third, if your cable box has HDMI output, you can get one of these: http://www.ebay.com/itm/HDMI-Dolby-DTS-PCM-5-1-7-1-To-Optical-Digital-Audio-Converter-Decoder-/230840436904

I wouldn't bother.