Hi @easystreamer , thanks for the suggestion. Well, if we were talking about a high-end turntable, this would make sense, but spending almost $2000 for a set of feet for an amplifier is unreasonable. By the way, the producer positions these feet as feet for turntable.
I already ordered a set of original feet for Meridian 857. I think that Meridian's Engineers know what they do and what's an adequate solution.
Once again, thank you very much for the advise.