@whitestix, I also suggest you consider the Ayre Codex DAC. it has both USB and optical (Tolink) inputs. I own the Codex DAC and like it very much. As was noted above, several people, including me, like it over the Ayre QB-9 DSD DAC.
If possible, I suggest you use the Codex DAC's balanced XLR outputs to connect to your preamp. I am using its balanced outputs to connect to my Ayre AX-7e integrated amp and it sounds wonderful. It is an outstanding DAC for its $1,995 price.
If possible, I suggest you use the Codex DAC's balanced XLR outputs to connect to your preamp. I am using its balanced outputs to connect to my Ayre AX-7e integrated amp and it sounds wonderful. It is an outstanding DAC for its $1,995 price.