Well the more and more I read the more and more I get confused. So I think I will just ask and see if you guys can help me. I set up a digital (toslink) connection between my pannasonic dvd player and my kenwood reciever. The reciever is capable of dolby digital, prilogic 2, dts. I underdtand that dts needs to be set to bitstreem, as well as dolby digital. What about pcm down conversion should it be on or not. I really do not understand what it does, but will it being on make the sound better? Any info would be greatly appreciated.