When I tried the device for the first time I was as far from being more enthusiastic. But the device for the price a great sound and a mind-boggling good volume can be loaded on the computer with either a USB mitgekauftem Netztteil still directly with the USB cable. thought only of a one-time mistake and ordered the unit nochmla and exactly the same problem. Hab returned my first device to Pearl and waiting for the moment for a response. Really a pity :-(