The JVC Victor CL-P2 Plinth that I chose, (when you can find one), is a very substantial 7 layer composite they engineered at the peak of the Vinyl Era, with two removable arm boards
here’s a peek at my arm board removed (it is a 5 layer composite, you cannot imagine it warping or vibrating)
It fits various models of their Quartz Locked Direct Drive spinners, I chose TT81
shown with it’s dust cover on. you lift it off, need to have a designated place for it