Anybody else get a NAD M66 yet?

I took delivery of a new NAD M66 preamp last week.  I’m curious if anyone else has one yet?  One reason I was interested in it was the all-analogue pathway having a resister ladder relay volume control.  The early videos posted by NAD demonstrated the volume control clicking (as resistor ladders will do…).  Mine does not, even when in analogue bypass mode using an external source.  I’m wondering if they changed the design or if mine is not working properly.  

Initial impressions are mixed, but it’s too early to make determinations.  The other reason I wanted to try it out is for the DIRAC live and bass control capability.  After playing around with the DIRAC, I can say it definitely makes a big difference in my asymmetrical room.  I finally get non-boomy bass and hear all the low notes consistently.  It does seem to take a bit out of the transparency of the overall sound, but again, too early to make final judgments.

Overall, it works well and sounds pretty good, but they still have some bugs to work out, which were expected I think, given the delayed release. For example, if you are using a source with the all digital processing (like the internal DAC), and have subwoofers connected as I do, then switch to an external source with analogue bypass, the subwoofers still seem to be stuck in digital processIng and lag behind the main speakers.  Also, playing around with the various settings in analogue bypass and in the digital domain have left me with an error message, and the unit reboots itself.

Used as a simple analogue preamp, it sounds pretty good but not up to the standard of a stand alone $5k preamp.  One might expect that, given all of its features for the price, and again, it is early.  It is very smooth though and nothing sounds unpleasant through it.  It definitely shows promise, we’ll see how further use goes…


I agree.  I’m still holding out on it in case I’m missing something or it’s still early.  I also want to make some more comparisons with another preamp.  But otherwise, I’ve come to the conclusion that if this ends up not being a great sounding analogue preamp, that they did not go out of their way to make it so, then one should just buy an M33.  Other than the 4 balanced subwoofer outputs, I’m not seeing what the big difference would be then between the two products.  (Assuming one is using the M23 amp, which I am.  That’s one reason I went out for the M66, I was so impressed with the M23).  

I'm trying to download the curve from the USB but must be missing a step. I see where I can load it into the microphone. But I cannot just load from the hash marks in the top left corner. So does this mean I have to load into the mic and re-test the room? How do I get the NAD curves to integrate with my listening? 

There’s a pretty comprehensive video on NAD’s website about using DIRAC I believe under the FAQ section, you might want to check that out.  But what I did was after finishing my measurements, I went to the DIRAC drop down menu, I think the option was ‘upload curve’ or something like that, then selected the file from the USB drive attached to my computer.  Then I uploaded the curve to the M66.

I'll give it a shot. Another thing I noticed is that the tone controls aren't that responsive. Particularly a hard fade left or right on the balance control doesn't totally silence the opposite speaker. Curious if that's try for you. May be in the update 

Wow after doing the Dirac Live calibration and using the Harmon 8db curve, I'm in Audio heaven. This is well worth the cost for me now. I admit I was kinda worried for a bit. I'm using  2 SVS SB13 Ultra subwoofers and 1 Martin Logan balancedforce 212 with Revel Performa F328be Towers. I can't wait to try Dirac ART when it is available on the M66.