Looks sweet mine are on stands.
I bought the XR50 2 weeks ago to match with my new 252...I am very happy with my purchase! XR50 sounded like full standing speakers out there; soundstage is big, bass is more than enough of what I'm looking for, and highs are crystal clear! Still contemplating whether I put them on a stand or just sitting on top of my Audio Cabinet.
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Gorgeous setup Darell, what are you using as sources?
I've got those under my XR50s (which are on a couple of somewhat-flimsy neoclassic plant stands of all things) and they do indeed make a difference (probably mostly by raising them to just the right height). I'm not one for audiophoolery (e.g. "audiophile circuit breakers" and the like), but, surprisingly, these did make a difference for me. Also tried yoga blocks, which did not. So go figure