Ayre QB-9, Wasapi vs Thesycon drivers

Have any of you QB-9 owners compared the sonics of running wasapi in Class-1 mode versus using the Thesycon driver in Class -2 mode?

The whole point of asynchronous USB is to relieve the DAC from having to (re)clock data coming from the host. Host drivers don't/can't make a difference (unless they're "broken") which was the whole point of putting asynchronous USB hardware/software in the DAC. Given that, the only way for music to be different is to have different bitstreams of music coming from the host. And to get different bitstreams you have to have not setup your music player correctly.
I also should have mentioned that the only reason you need Class 2 USB drivers is for 192khz/24bit music.