@ghdprentice, given your absolute top-end system, I can readily accept that your digital stream sounds as natural as your analog side. This assures me that yes, it CAN be done. But can it be done at, say, half the expense? I note that the ARC DAC 9 is upsampling (as is my DAC), while @jgoldrick and @soix recommend R2R DACs which I have never auditioned but are nearer my intended budget. Also recommended for my lesser Aurender model has been the T+A DAC 200 whose technology I don't pretend to understand.
Thank you for the sobering insight that DAC upgrade may be moot if I ALSO need a streamer at the W20SE level. If that's the case then I must simply continue treating digital & analog reproduction as the two different sonic experiences they have always been (for me).