I be excite to get this unit so that I would not have to always change out which system I have hook up in my little office on my little tv . the system work great , mostly . although I do notice some glitch , it be good enough to say that it be justify in price . good thing there be controller port for each system that work , because the include wireless one simply do not work . neither of they . at all . period . I be pretty tick off about that as it show they have no quality control whatsoever . I decide to return it and try again hope I get a work set . I might come back and post a follow up if the next set works\/doesn ' t work .