Recommendation for inexpensive integrated

I'm trying to help out a friend who is finally willing to put a toe into the audiophile world. He picked up a pair of NHT SB3s on sale at Audio Advisor on my recommendation. Now he needs a new integrated amp or receiver, but doesn't want to spend a bunch. I was thinking of the Cambridge Audio Azur 640, but I see that Sam Tellig gave it a mixed review in Stereophile. Do others like that amp? Any other recommendations in the $500 or below price category? (I own a Creek 5350SE myself, but that's too expensive for my friend.) Note that the NHTs are not very efficient so some wattage is needed.
Thanks a lot!