It is a card sleeve and two interlocking pieces of polystyrene
excelling with voices and allowing them to flesh out and sound more believably present in the recording than is common
it’s certainly still rather toasty and would benefit from a bit of open space around it
please see pictures for some of the decks it can be used for (Rega
Rega Planar 1, 2, 3 Feet (x3) Rega Power Supplies It is a card sleeveA set of three Rega Rubber Feet as found on the latest Planar 1, Planar 2, Planar 78 and Planar 3 turntables. They include self tapping screws. These feet will fit the majority of Rega turntables basically all of the models up to the RP3 Planar 3 and can be fitted to older designs like the P1, P2, P3, P25 and the Rega RP1 and RP3. These may also fit turntables from brands who sell sold Rega derived turntables, including NAD, Moth, and Edwards Audio.