ROCK with Yggdrasil Unison USB

I am using the USB cable that Schiit sells; the other cable is USB 2.0, an AQ Cinnamon.

Both cables performed excellently when I drove the Yggdrasil Unison USB input from a Core I installed on a Mac laptop.

Both cables also work with two external USB->SPDIF interfaces, as do the NUC7i7BNH USB ports. ROCK driving the Yggdrasil from the NUC7i7BNH in this way also produces beautiful music.

So, the Yggdrasil and its Unison USB appear to be working fine.

I built a second NUC7i7BNH/ROCK and I get the same results as the first one.

I suppose this will remain a mystery,

Thanks for the suggestions.

Mike