I don't know, but I've always thought (maybe mistakenly) that DSD could only be output through an HDMI connection. There is a d.bob, digital break out box, GeerFab Audio - GeerFab but that requires DSD to be input by HDMI.
I don't think you can output DSD from your Esoteric but it can't hurt to connect it to your PS Audio DAC and see how it sounds.