have a feeling Lamm would be a perfect match with Box Furniture Racks. they aren't cheap, but nowhere near the "big guys" in expense. I believe MikeL is using their amp stands and could comment.
I did own 3 of the Box Furniture amp stands when I had my darTZeel HNB-108's and my Found Music Mercury Tube rectified 2a3 mono blocks back in 2011 before the MM7's and 458's. I sold the 2a3 monos, and then the 108 and now I have my 458's on them. I did sell the 3rd one to a friend.
if you are looking for a finely built, beautiful classy grounded rack I'd highly recommend them. price is reasonable.

