Thank you for your comments. I purchased a LUX 550 AXii and am completely happy.
It’s one heckuva component and works beautifully when paired with either my Guarneri Homage or highly-modified Magneplanar MMG’s. I’ve never heard such excellent mid and high bass response from the small Maggies as I now do.
I have a pair of REL T5X waiting to be unboxed but for now, I’m just gonna listen to the system as is, with no bass augmentation. I’m quite astonished. I feel as if I’ve moved beyond "hi-fi" into simply listening to great music and not thinking about the usual audiophile stuff. And to think, I have all this with moderately priced components. At least "moderately" priced for many audiophiles.
It is liberating, to say the least. :)