Well, got home today and opened up and connected the X10 to the H10 and........what a letdown!!!!! Maybe I am doing something wrong but it sounds like crap! I am very disappointed. The Rotel RDD-06 sounds much better with the H10. At first I thought there was something wrong with my interconnects so I changed them with some others that I know are good, no luck. Then I thought my cans might be the problem so I swopped them out, same. I have changed the USB cable as well but no luck. It sounds like my headphones have a blown driver and the sound is all fuzzy. I am going to let it settle in for a few hours and try different tracks and see if that helps. About 50% of the tracks I play sound like crap and the others are fine, sort of. Maybe I just have a lot of not too good recordings and this DAC just reveals it. Oh well, I have ordered some nice new usb cables and interconnects(Balanced), hopefully they will sort this out. I am going to try a few other things like moving my wireless router and a few other little things and see if it improves. As I type this, there is a Greg Karukis track playing and it sounds just fine so maybe it needs time to settle in and it needs to be fed with premium recordings! Oh well, I'll move back from the ledge now. Merry Xmas and Happy New Years to all of you out there from "Down Under". Cheers, Swannie.