Two Sources, One DAC

Hi all, 

Thinking of dusting off my Denon SACD/DVD/CD player.  It's a bit dated, so was thinking would I be better off running it through a more modern DAC?  If I were to do that is there any reason I cannot also run my Node 2i through it also?   I see Schitt has optical, dig coax and USB on a couple of their models, for example.  If this is a good idea, any guidance on which connection to use where?  

Could be a rookie question, if so feel free to let me know.  

Thanks in advance.