I obtained one of these interfaces used to see if the UAC-8 might be a better investment than the Focusrite PRO 40.

I must admit, the HI-Z input is far superior than the PRO 40, as are the mic pres'.

More interestingly though is the quality of their device drivers. I have been able to load four instances of S-Gear, with a 99% load with no slipped buffers - and on USB2, even though the unit is capable of USB3, which my test system is not. Interesting!

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Well done Bob and ZOOM!!