Need advise on NAD Silverline products

Does anyone have any information about reliabilty, after sales service for the above products made by NAD Holand?
They were made in Denmark, and its rumored that Gryphon either made or designed them. The integrated amp looks identical to the Gryphon Tabu. Neither company confirmed (or denied, I believe) that they had anything to do with each other.

To my ears, the S series integrated amp sounded far better than the rest of the stuff. I don't recall any complaints about it or the other stuff. Not sure if there's still parts available for them as they were made in the mid 90's I think.
Thanks for your help, Kbarkamian.