From just a quick look , it does not appear you can use the Esoteric in your config. Im sure I will be corrected if wrong . The esoteric appears to only have analog out (streamer/DAC).
If you want to use the internal DAC in the Luxman with ROONs you will need a ROONs endpoint to feed a digital signal into the Luxman. You could look at Small green computer optical rendu or micro rendu to see if they would work. Looks like the Luxman has optical,USB and Coaxial digital inputs. Would love to hear a comparison between the Esoteric DAC and the LuXman
Here is how to set up the optical Renduhttps://www.youtube.com/watch?v=3L7aZR6RST8
If you want to use the internal DAC in the Luxman with ROONs you will need a ROONs endpoint to feed a digital signal into the Luxman. You could look at Small green computer optical rendu or micro rendu to see if they would work. Looks like the Luxman has optical,USB and Coaxial digital inputs. Would love to hear a comparison between the Esoteric DAC and the LuXman
Here is how to set up the optical Renduhttps://www.youtube.com/watch?v=3L7aZR6RST8