Wanted to follow-up on my earlier question. I received my U1MINI and am pleased to say it works perfectly in my system. With both DACs connected to the 2 USB outputs the U1MINI only outputs to the one in Roon that is powered on. The other unit can be in standby without issue. Exactly what I was hoping for with no cable swapping needed! The U1MINI also sounds SIGNIFICANTLY better in my system than directing the USB outs from the Roon Nucleus+ directly to my DACs. Overall very happy with the upgrade. I need to start a U1 upgrade fund 
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