i just purchased a teac ds-h01 dac to connect to my teac ag-h300mk3 receiver and computer. I have a usb cable running from the dac to my computer and rca cables going from the line out on the dac to the aux port on the receiver. I am using windows 7 64bit and cannot get the computer to see the dac, I've tried hooking up the dac to a different computer and still have the same problem. I've even replaced the usb cable, tried different usb ports and still no luck. Am I missing something or do I possibly have a defective unit. Please help because I really want this to work.