I have a Cambridge Audio Azur 550C CD player. It has a Wolfson WM8740 DAC inside it. All the brurb says that this DAC is '192KHz capable'. But does it actually upsample from the CD 44.1KHZ to 192KHZ and then carryout the D to A conversion from that bitstream? Or does it actually do something else? I can't find anything to give a clue as to how these DACs are implemented. I am thinking of putting another DAC behind it, but I want to make sure that what I am doing is actually likely to be an improvement on the original setup. I have heard good things about the Behringer Ultramatch Pro data converter and I was thinking of buying one to put behind the CD player and then either using the internal DAC or feeding that into something like a Topping D30 or D50. Any thoughts?