Oh, oh...Pogo again... Not sure how much you receive from NAD for your nice marketing...
@Stefano:
The M66 is a disaster to use. As far as I understand Pogo correctly, the M33 is much better in this regard. From the point of usability, firmware and service, I seriously have to advise against the M66. Don't buy it if you want a preamp with decent functionality! See my previous postings.
On the other hand - you have a very interesting system:
I always thought Dirac had trouble with dipoles. Does this work for you or do you use Dirac at all?
If you don't use Dirac, I see absolutely no reason to buy a NAD, especially the M66.
If Dirac works well for you: Do you also use subwoofers or do you want to use subwoofers in the future?
Then the M66 could be interesting for you. Give away the (surely great) Electrocompaniet and the M33. Take your new M66 with a crossover frequency at around 50-70Hz with DLBC activated and one or two really "fast" active subwoofers and keep the Accuphase for your Maggies. Could be interesting.
To get to the point: NAD only makes sense if you want to use Dirac, specifically Dirac Live Bass Control. The rest of the device (and probably all other NAD devices) is rather underdeveloped and sometimes even embarrassing.
So think twice!
Nocko!