I love my H9000, but also had to send it back because of a problem with the USB audio connection. I now avoid that part of the unit as I’ve found it a bit problematic (plus there’s no way on the unit itself to use mic pres or even a headphone out), and don’t want the same issues.

Amazing piece of gear with some very frustrating flaws. I so wish they would make an expansion card with some more analog IO, and would sort out some of these USB/clocking issues.

Anyway, good luck with it. It’s super powerful.