I am using the thin RCA cables that came with it. The Node can also do optical, coax, and usb.
My Parasound Hint 6 has a built in dac of its own. It’s being bypassed by the Node dac via RCA.
Have you found better sound quality using one output over another?
The great thing about the node is that it outputs analog and digital at the same time. I would recommend switching back and forth and seeing which dac you like the sound of more. The one in your integrated amp or the one in the node. I use the dac in my integrated.