I'm not recommending this specific unit, but something like this is what I use. The cable box's HDMI out goes to the switcher, then one output goes to the TV (for video) and another to the DAC. It looks like your DAC lacks an HDMI input, but you could use an HDMI to USB convertor there.
Cablebox Audio Out to DAC inputs and other options ?
For those who might shed some light on various connection options for an Audio Out connection to a DAC , then to an int amp or power amp, please feel free to leave your thoughts.
First of all, the main objective is to connect my Audio Out on the cable box to a new int amp or power amp down the line. Right now connecting the Audio Out to my existing int amp and works fine. Now, just say I purchased a new power amp with just inputs from DAC , is it at all possible to connect my Audio Out from the cablebox to the digital inputs on the DAC (Denafrips Pontus II) & then somehow connect to a new power amp with just one set of RCA inputs. The user manual for the DAC is quite scant in overall scope of info provided there.
The audio signal from the cablebox will have to incorporated directly to the amp or even to the DAC first , as all sound is coming through external speakers and not the TV. So, given the current configuration and desire to keep the DAC, would connecting the Audio Out from the Cablebox to the DAC and then a Power amp be possible or will another Int amp be the only solution at hand ?