I have a NAD 355BEE paired to Mezzo 6 floorstanders. In addition to the CD Player (also NAD). I was very happy with the way the combo sounded. The Mezzos are a little inclined towards the brighter side and this gets perfectly balanced by the Amp which tends to have a bias towards the warm. I added a Cambridge Audio CXN V2 recently and am drooling (just a bit) over the CXA81 which should be well balanced with the CXN. Any thoughts on whether the difference between the NAD and the CA will be significant enough for the money.