I have an Onkyo 898 w/upsampling capability . .can some one explain what this is all about?. When to use it? What are the benefits? As I see it, cd's are done with 44.1kHz sampling rates or there abouts with some 8? or 14? bit resolution (I can't recall the specs), so if I up-sample to a higher sampling rate/bit res what good would that do if the native material was recorded @44.1kHz sampling rates? What am I missing here?