Not sure if the 525 can do this or not, but I can use the analog output of my dvd player for two channel audio, and the optical output for movies. The 1066 remembers that when I select "CD" to use the analog, and when I select "Video 3" to use the optical. That way if my dvd player's DAC's sound better than my 1066's, I can take advantage of them for two channel audio, and still use the optical output for Dolby Digital soundtracks.

Did that make any sense?