I would have give this home theater system five star if it be not for one major flaw : there be a extremely loud , high frequency hiss that come from the receiver -lrb- yes the receiver , and not the speaker -rrb- . and the hiss be too loud to ignore . I notice this immediately after setup and ask for a exchange . Amazon ship a replacement , and I notice it again . I call Sony customer support and they inform I it be indeed a defective unit . what be the odds of I get a defective unit 2 time in a row ?