I suspect that both amps would be electrically compatible with any speakers assuming enough power, by match in this case I mean that Richard likes the way the Ayre makes his speakers sound; you could be pretty sure that the Ayre is a pretty good match with the Vandersteen's sound signature. That being said, I can't imagine the XA160.5 couldn't make most speakers dance as well. These are among the finest SS amps made IMHO and can't see why both would not work well. Since the Vandersteen's bass is self-powered, I can't imagine either amp being a problem. Really I think this is a toss up and is just a matter of taste - they are both great amps - I can see why you ask for help in deciding, but I'm not sure there is any defintive answer hear as neither one s*&^%ks. Not a bas position to be in.