Precharging--microwaving--do what you want, but what I enjoy with a new mat is knowing my system sounds better every day I turn it on for the next few weeks. I am excited to hear the differences---you just don't get that experience in audio very often, and then you get more mats, and you extend the fun into months---however long you want.
Microwave? You're on your own with that. It may be safe, but does it alter the mat in the long run?
Microwave? You're on your own with that. It may be safe, but does it alter the mat in the long run?