Yeah, I just double checked and it's from the usb connection. I know this is more a household power/computer issue, but any ideas on a workaround for this? As this is for my secondary rig I was hoping to not have to drop too much extra cash on a solution. I suppose a usb-spdif bridge would work, or maybe a usb isolator like this? http://us.hifimediy.com/index.php?route=product/product&path=69&product_id=62
[/quoteDo the computer and the DACmini share the power strip?
Does the computer itself give you any trouble during the brownout condition?
A line isolator is already built into DACmini, so not sure it would help, but you can still try of course.