As stated above, the Sony and Philips do NOT do DVD Audio, but will play the DVD video layer which all DVD players will do. So if you upgrade to the Philips muralman, it will NOT play the DVD audio layer, so it will NOT do even better with DVD Audio because it doesn't do DVD audio. That is not to say that its redbook performance, or playing of the audio portion of the DVD video layer will not be as good as your other player-perhaps its redbook performance will be superior to the DVD Audio on your other player (I doubt it but who knows), but it (and the Sony) will NOT be playing DVD Audio.
Hope this is clear.
Hope this is clear.