Day vs all in one pre amp dac

  Sorry about the title.   I tried to edit,,,dac.  Not day,   This may have been asked I’m sure, I did search, I have a Musical Fidelity V90 II, a great buy and piece for 249.00. I have. Schiit Saga for pre amp. My budget is definitely under 1k, looking for a recommendation for digital preamp dac that will out perform the v90. I’m also thinking 1 unit could work better than two. Second ask would be for just the dac, Thinking Schiit again. Multi bit modi or bitfrosh. Thank you,