Suggestions for an integrated amp?

What's the rest of your system? The A3 is great. I've owned one. One of my other favorites in that price range is the Audio Refinement Complete.

You're right. My fault, I usually pick up on that. I've had great success with the audio refinement and B&W (CDM 1NT). I've also had great success with the A3 and signature 805's)

I guess it depends on how much you want to spend. I think the AR could be a big improvement over the NAD, although they are the same power rating.. The A3's can be a little tricky to find. I wouldn't mind grabbing one myself. The AR's are a little easier and should be 100 to 150 dollars cheaper than the A3.

I can't speak about the 3.2 as I have never owned it, but would love to try it.

Honestly, in your situation, I would go for the A3 if you can one used.

One more thing, the MF X150 is a great amplifier as well. And, come to think of it I prefered my x150 over my A3. It has more power and I feel is more refined. Those are even harder to find and sell quickly. But, if you can grab one, that would be worth the 650-700 dollars they cost.