Soko, Your mat represents the "other" school of thought around mats, the idea that you want to hold the LP away from the platter and from any noise or vibrations that might enter into it from the platter. The Resomat, sold by Vic of Trans-Fi, I think, is another example of such an approach, as was the old Transcriptors platter per se, that held the LP on little pedestals topped with tiny pieces of felt. The up- or downside of that approach, depending upon one's point of view, is that the LP is free to resonate secondary to the energy imparted into the LP by the action of the stylus tracing the groove, and also any warp in the LP is uncorrected in any way. I can imagine how that might sound, both in a good way and in a less good way.
