Because delrin mates to vinyl better than most mats do. Trust your ears.
Delrin platter with Mat
Would a Funk Firm Achromat on a Delrin Platter be likely to improve the sound? (It seems Delrin platters are often used without mats, although I am not clear why this is the case.)
https://www.thefunkfirm.co.uk/achromat
Thanks.
https://www.thefunkfirm.co.uk/achromat
Thanks.