Just wondering, since they are not on display anywhere in my area, if anyone has ever seen, heard these amps? They have to be the most imposing amps ever made with the height of 31", 350lbs, and the "reference" build quality of Mark Levinson. But how do they sound? Not many reviews of them in major publications. Just curious if they are indeed one of the best amplifiers regardless of cost out there--just in case I come into a windfall and can afford such luxuries.