All of the above comments are essentially correct. None of the Vandy line of speakers are terribly finicky about amplification, provided that it's of good quality (i.e., with sufficient power and power supply). I've driven my own Vandy speakers (2C, 2CE, 3A, and 3A Sig's) with Adcom, ARC, B&K, and now Bryston, and have also heard the Model 5's driven with VTL, Ayre, and Quicksilver amps. While there were some quality differences, I think all performed well when considering their price ranges. I have talked with Richard Vandersteen in the past, and have been told that he's used and recommended several different amps, including McCormack.
