cat6man,
Listened with USB3/Roon earlier (with a totaldac d1-12 mk3 DAC) and just now switched to USB1/Roon. By the way, thank you Emile for making the switch a snap!
At first blush, I found the USB3 excelled at all the audiophile attributes by far in a very exciting way than before the update.
But USB1 brought a deeper, more effortless level of engagement. It presented the music in such a natural and relaxed manner that the room disappeared completely. It allowed me to be transported and immersed in the live recording venue without any effort.
exactly my experience with totalDAC.
now i have to swap the optical for cat6 cable and see how much further i can go here