If you have a ceramic platter Rega, a P9, RP10 or P10, I have something simple for you to try. Put a sheet of kitchen foil under the mat.
If you sit the platter on the floor you can put a piece of aluminium kitchen foil over it and run your finger round the edge to mark the circle. If you cut a couple of mil inside the mark the foil will be hidden under the mat. Pop a hole in the middle and put it on the platter under the mat.
Try to leave the foil in until you forget it's there. The temptation might be to take it out again straight away but give it a chance.
I'm not going to say anything about what it sounds like, even if it's good or bad. I just want to see what other people think. This is obviously with the ceramic platter and thin white mat. I don't know what would happen on a glass platter with the thicker black mat but it costs next to nothing and takes two minutes to do so feel free to try it maybe?
If you sit the platter on the floor you can put a piece of aluminium kitchen foil over it and run your finger round the edge to mark the circle. If you cut a couple of mil inside the mark the foil will be hidden under the mat. Pop a hole in the middle and put it on the platter under the mat.
Try to leave the foil in until you forget it's there. The temptation might be to take it out again straight away but give it a chance.
I'm not going to say anything about what it sounds like, even if it's good or bad. I just want to see what other people think. This is obviously with the ceramic platter and thin white mat. I don't know what would happen on a glass platter with the thicker black mat but it costs next to nothing and takes two minutes to do so feel free to try it maybe?