Pretty sure that I bought my M3 from a CAM ad. Trying to remember, but very, very likely. I just remember how hard I worked to get it and the deal almost fell through as the seller didn't understand english very well and he misunderstood one of my messages, thought I was suggesting he send it without full payment and he promptly said forget it, I don't do business like that. Desperate I called him up and explained my case to him and lucky for me I won his confidence and he sold it to me. It was absolutely pristine, full retail packaging, everything as new, just mint as mint could ever be. I think I paid $2000 Canadian which in my mind for the M3 was stellar. For a time I had the M51 DAC with it, but eventually moved past it despite very much liking it (I know that it had a mixed review here). Anyway, yes, as far as I can tell, it is a very well engineered device and some measurements seem to suggest that it lives up to the marketing.