Anyone using Gustard U12 usb converter?

I replaced a John Kenny MkIII with the Gustard U12... much better. Linear power supply pays dividends for better dynamics, bass performance.

I just received mine a couple of hours ago.
I was hoping to hear some improvement but I was surprised how much clearer everything became instantly.
Just listening for about 2 hours and I notice soundstage is still a little congested, but high are crystal clear and I am hear more texture in the bass.
I did notice some skipping on one of the 24/96 tracks, but I am too tired to troubleshoot at this hour.
I am running Audirvana 2.0 on a mac mini.
I briefly attempted to play with XXHighEnd for a little while and could not get any terrific results yet.
I am guessing to clarity is better due to eliminating a lot of jitter. Noy sure why soundstage has not opened up yet.

Clarification...
I run XXHighEnd on a Windows laptop.