Summary: Unit arrived. It did not work. I therefore must pay return shipping. Some curious text in one of the return screens: "...if unopened." How could I not know that it was defective if it was not opened. This is a deal beaker with Amazon.
Summary: first got it and the volume pot was noisey. Turn the volume down would create noise then the protection circuit kicks in. Powering on and off worked a few times. Now the unit displays a flashing light and wont come out of protection. Right out of the box - problems. I have lots of hifi and know what I am doing. Bought this to avoid the constant upkeep of vintage gear. Well, this thing lasted a couple hours tops.