About sound, connections UMD Performance here is already much has been written, which I would like to add anything. Like to do but to another subject carefully, the remote control. The range and especially the angle is not really convincing. The manual is an angle of max. 30 degrees and in the mean 30 degrees and 30.1 degrees do not. My old system for 35 had a much better angle here. Battery I have fresh clean, unfortunately no improvement .... For the price and the quality of other components here a little more attention would have done well!