I currently have a single tuner Series 2, which works pretty good... little slow and has the smaller (40GB) hard drive. I was thinking about going for the Series 2 dual tuner, but I believe if what I read is right, then I cannot. I only have rabbit ears (OTA) for my channel reception and I think I read that the new ones do not support this? However, my single tuner one works fine. What is the reasoning behind this? Thanks.