Steven Plaskin has posted a review of the iFi Audio micro - iUSB 3.0 USB filter and power supply ($399) at AudioStream. His conclusions:
“I found the performance of the iFi Audio iUSB3.0 to be not only impressive in my system, but a significant improvement over iFi Audio’s previous efforts with the iUSB Power and the iPurifier. Your final sonic outcome using the iUSB3.0 will, no doubt, be system dependent. But given my experiences with the iUSB3.0, I would strongly recommend that computer audiophiles give this excellent product an audition.”
You can read the full review here.