I may be presumptuous since I don't know how your gear is set up physically, but since the Eitr is only usable with a source using a USB output (which leaves your CD player out--you wouldn't use both at the same time) why can't you simply swap cables? This is almost exactly what I do. When I am listening to music from my laptop (which I use on my kitchen table), I stack the Eitr with Mimby. When I move Mimby and Valhalla II to my TV area, I pull Eitr's coaxial cable out of Mimby and replace it with the coax from my Blu-ray/CD player (and connect the optical input to the TV. I live in a studio apartment, so it would be silly to have another DAC/amp 6 feet away in the same room, at least when retired on a fixed income. (Actually I do have a couple of other amps after upgrading, but only one DAC.) I generally make the move twice a day and have it down to a science; I have a power cable for Valhalla II in each location and have the Mimby on a long extension cord so it can stay powered up 24/7 as Schiit recommends. Not being electrically knowledgeable, I even asked Schiit if there was any problem using Mimby on an extension cord like this--they said no, other than tripping over it.