Cast aluminum, zinc, steel, stainless steel, acrylic,other plastics or layers of of all types. Then we get into the mats, felt, cork, cork, micro dots and whatever. My advice. Spend your money on a better cartridge or phono preamp.
Acrylic platter
I have a Project expression II turntable which comes with an aluminum platter . I was wondering on buying an Acrylic platter made specifically for my turntable . My question is will it make a difference for the better changing my aluminum platter for an acrylic one ? I'm using an Ortofon Salsa moving coil cartridge with it , project speed box , cables are JPS superconductor Q and phono stage is the dedicated moving coil gold phono board of the Audible Illusions 3A preamp .