Reason being is because I have a stand alone (non HD) TiVo but I want to get HD. I had Voom in the past, and with it you can use the Component to output HD and at the same time use composite to output SD, that way I can have an HD signal going to my reciever, and an SD signal going to the TiVo. And if I want to watch a show on TiVo, I just switch inputs on my receiver.