Why not get a Schitt Urd that is specifically built for your use case. It does not have an internal DAC and also supports pass through streaming. A great feature set. If it supported SACD I would have bought that instead of the D.BOB, which requires a SACD/CD transport via HDMI.
Schiit Audio: Audio Products Designed and Built in Texas and California
I say this because you want to use your MAC as a DAC.