Yes and no. A 4-tuner Tivo is required for the initial setup until a later software update. But in the meantime, it can stream recorded shows from ANY Premiere on the network. At least, this is the information we had as of May. The point of the future software update (we don't know when it'll happen) is to make it work fully with 2-tuner Tivos and allow dynamic tuner controlling. With that update, if Live TV is not being watched on the Mini, the tuner will be free to use by the DVR. Additionally, the Mini reportedly will have some sort of standby mode and/or video output detection.