Class D cannot outperform a great AB amp.
@vinylshadow That was probably true a few years back. But these days it isn't by any metric you might find important (imaging, depth, smoothness, musiocality, distortion, etc).
I heard a class D at AXPONA about 8 years ago that convinced me that if we didn't get a handle on class D we would be left behind. At this point class D is so good that I am convinced that tube power amps are on borrowed time as well as class A or AB solid state amps. There's still life left in them but ten years from now the market will look very different!