Looked at the box bought for use for a fitness class. For the price the entire gym will reverberate with acceptable quality. Operated the box is doing on a laptop. Unfortunately we had to about six months notice that the connection is broken for the power out of the holder. It can be attached only with a lot of effort and fumbling now. In order to repair the box will not come around. At this point, it seems a little cheap processed. Too bad, because otherwise we had our enjoyment of it!