If you have a home theater Dolby System you are going to get the best quality sound if you use the Dolby digital receivers. The Dolby system actually has its own encoding system and you need to be able to decode signals that come through the system. This is so that the system can produce a better sound quality by filtering out unwanted noises and signals. The radio receivers that are specifically for Dolby makes this work a whole lot better and you can then get top-quality sound from your system as a whole.