+1 to Wyred4Sound IcePower class D amps. I have the ST500, which I bought used. It sounds at least as good as any solid state amp I've had. Just as important, it doesn't have thin/parched harmonics, dry treble, or that soulless "accuracy" class D is sometimes accused of.
There's an ST1000 F.S. by a Canadian seller on the other audio site that matters. Cheap money and a low-risk way to dip a toe in class D.