I was reading about one of the Cambridge Audio products, and I found this information about their ATF2™ Upsampling:
It seems to me they might be making some pretty dubious claims. They are saying that they can take the digital data contained on a CD, modify that data, and to quote: "allow the digital signal to closer represent the true analogue sound of the studio mastered audio data."
Let me see... take some data, modify it, and then make it closer to the original data??? Aren't they saying that they can take a CD and guess how it should have been mastered in the first place?
Wouldn't that be like taking a rock, adding some material to the rock, and then saying you have now made the rock the way it was supposed to be?