DVI direct to TV
It's no problem to connect your set-top box (STB) directly to the DVI input of your HDTV. The problem comes in when you (may) also want to run a DVD DVI output to the same HDTV (unless, of course, it has 2 DVI inputs). The main reason for the input/outputs in an amplifier/receiver (AVR) is that it allows convenient switching between the vaious possible input components. Since my AVR has no DVI switching and my HDTV has only one DVI input, I purchased a remote-controlled switching device (Gefen Products from Ram Electronics) to do all my DVI switching. Hope this helps.