Does it have all the features you want? Is it powerful enough to drive fairly inefficient speakers if you have or buy a pair? Did it come with the owners manual? Which to me indicates whoever owned it was at least caring enough to keep track of it and probably treated their equipment well.

NAD makes good gear for the money. People seem to either really like it or not. Not much middle ground. I've never owned any but am looking for one of their CD players if I can find one reasonable to see for myself.