I'm not sure but it seems to me that nobody suggested you the most obvious, natural and convenient way to go owning a PS Audio DirectStream dac: the PS Audio Bridge II card!!!
It perfectly matches your dac, it is reasonably cheap, no additional boxes, wires and AC plugs, and it sounds like your dac: very very well!!!
I owned it and I’ve let it go just to get a new toy.
But, again, it is the most obvious way to go for you...
Mario