TiVo TCD649080 Series 2 80-Hour Dual Tuner Digital Video Recorder (2008 Model)
A sorely needed feature added to an already great product
After years of sticking to a single-tuner model (except for the DirecTv versions), Tivo has finally released a dual-tuner model. For the most part, the only difference between this model and previous Series 2 Tivos is the ability to record two channels at once.     The box keeps the look of the more recent series 2 Tivos, except for a black-accented faceplate. The connections in the rear are laid out largely the same as past versions, with the exception of an ethernet port that has been added for wired networking.     The software has minor changes, particularly slight modifications to the menu background images and the newer \\"tivo introduction skit\\" that appears when the tivo is powered on. The software and hardware work smoothly. There seems to be a faster processor included, as navigation through the menus is quick and smooth.     The dual-tuner functions work well. Having grown accustom to the single-tuner model, it took me some time to get used to the ability to change channels while recording (and that what is on screen is not necessarily what is being recorded). It was also pleasant to schedule 25 season passes without a single conflict-such is the benefit of being able to record two shows at once.     But the dual-tuner function needs some explanation. The people who benefit most from the DT function are those who have analog cable without a cable box (as I do). I simply plug in the coax cable into the tivo, and it is ready to go. (Note: there is only one coax input-the signal is split internally and sent to the dual tuners.) If you have a cable box or digital cable, things start to get a bit trickier. In fact, in order to use the dual-tuner feature, you MUST be able to receive at least some channels through an analog cable connection. This means that if you have purely digital cable that requires a digital cable box, you will NOT be able use the dual tuner functions, as there is only one connection allowed between the cable box and tivo. I suggest you go totivo's website and download the product manual for the DT tivo and read the part about connecting tivo to your cable. If it seems like too big of a hassle, you might want to wait for the series 3 tivos that will include cable-card technology (which allows you to use digital cable without the cable box).    One additional note, tivo has stopped supporting over-the-air antenna tuning with this model. If you hook up an antenna to tivo, it will only receive channels 2-13. Any broadcast channels above 13 will not be received.    And for those who are thinking of \\"upgrading\\" this tivo to a larger hard drive-the DT tivo is upgradeable in the same ways that past series 2 models were. I used the standard methods (which are published all over the internet) and replaced the 80GB hard drive with a 250GB one. Upgrading, however, voids your warranty (which is only 3 months anyway).    Overall, I am happy with the DT tivo, but that is in large part due to fact that I receive analog cable without a cable box. Many of you who have been using antennas, cable boxes or digital cable will likely be somewhat less satisfied with this model.