@sns -"DDC only does usb to I2S. I guess some kind of custom cable only way to do?" I looked around for an on the shelf coax or TOSLINK to I2S cable adapter. Appears they aren't available. So, yes a custom cable. What I am wondering is if this type of cable will degrade the signal path? In which case, experimenting with the existing inputs/outputs makes more sense.
@charles1dad Yes. I learned that after talking with a Pro-Ject who said he was not allowed to share the schematic with me. Interesting sidebar-I was told if I open the both the 005 DAC and the transport I could modify both I2S connectors. BUT that would void both warranties.
My transport is scheduled for delivery on Friday. Perfect timing because that gives me the weekend to set-up, listen and select best signal path between the transport and DAC.
I'm going to wait a bit ( no pun intended) to listen before deciding on which LPS to purchase. I think what I purchase will fine tune the sound quality I am after.
Once again @sns @charles1dad , thanks for your insights.
David