Thank you for the tips Peete!
Indeed, I have an Audio-gd power condition I really like... I few years ago I moved my main system from my leaving room to my basement and lost my dedicated 20 amp outlets... My wife kicked me out once I placed the "fat" Thor's... I still haven't found time to move the dedicated outlets to my basement. But I'll experiment taking the amp out of the conditioner. In the past I had preferred that arengement, but will reevaluate.
My solution to the spdif coaxial connection was to get rid of the cable and connect my Agd DI directly to my DAC using a male to male BNC adapter. That improved detail a great deal!
I still feel the Audio-gd cast cables are not at the same level as their gear. I'm now prefering the Canare da202 to the Belden 1800f... The 1800f is very detailed but a bit dry and sometimes fatiguing... Maybe it is just too revealing, or needs more break in... I'll have to experiment more for a more conclusive opinion. Maybe mixing them both...
As a reference, the difference the new cables made in the system are at the same level (but different) as the Olimex USB-ISO between my computer and DI.