The ideal level of damping
The idea behind using a cork platter mat is that it delivers the ideal amount of vibration damping. Felt mats can be underdamped, especially when used on metal platters. Thick rubber mats, by contrast, can be overdamped, which can lead to static build-up and more noticeable ‘clicks’ and ‘pops’ from the record surface. Cork damps resonances and vibrations more effectively than felt, without the static build-up of a rubber mat.
Resists dust
Another material advantage over felt mats is the reduced build up of dust. Felt mats can collect dust, especially if your deck isn’t fitted with a dust lid. The dust can then transfer to the record, building up in the grooves and harming the sound quality.
Hear the difference cork can make, with this replacement platter mat.