Hi OP, Yes, I was also looking at the X1 and was surprised to see no other digital inputs. I use my DAC as a streamer and endpoint for ROON, and also use additional optical input for TV Audio. For this kind of money, I would strongly consider the Mola Mola Tambiqui. I replaced my Auralic Vega G2 with the Tambiqui, and the difference was not subtle. More of everything; better base, better resolution, improved soundstage, and more natural with less glare. I hear all of these high end DACs benefit from a separate streamer, but also that the difference is small. For now, I like the one box streamer / DAC and it sounds amazing. Yes you need Roon Core elsewhere. Hope that helps, Ken