Hieule5,
You said "Your 326BEE is probably an improved version of the 325BEE and if that is the case then you have a decent product that can outperform Cambridge Audio, Arcam, Rotel and last for a decade."
That is a pretty strong statement that the NAD 362BEE is better than than these top brands. Have you made a direct comparison in the same system to all the products of the other fine brands. The NAD may be good but I'm not sure your sweeping statement is accurate.
I have the Cambridge Audio 640A V2 integrated amp and its performance approaches the YBA Design integrated amp and an older Linn Majik integrated that I have also owned.