Why only one star? In concept, I was fascinated by the little box. I wanted this necessarily have, especially when you go on holiday times and in the hotel wants to hear music. So ordered through Amazon / Pearl. Arrived connected. Super boils down .... but only heard music of each micro-SD and USB. Then silence, did nothing more. Tested card and USB flash drive on another device, everything went flawlessly. Well, can happen even once. I gave the little box again a chance. Wanted to be fair, So return to Pearl - settlement was the way great. Defect was confirmed and I got a new device. Connected and the same effect. But can not be true, as a S ** .... !! That's it then small box. Returned and transfer of the purchase price. So a star for the idea. Pearl execution super in both cases.