I just tested the Lambskin Perforated on my JAR650, absolutely stunned by the sound from this modified JAR650 with the ZMF pads installed.
After installing the pads, there is an apparent bump in soundstage depth, stronger dynamics, increased clarity and separation is a lot better than the stock velour pads.
Best part is that unlike the stock velour pads, these amazing ZMF lambskin pads will not start to roll off the treble due to wear on the weak velour material.
My JAR650 now sound like everyday cans with a sound signature I'm very crazy for, its getting more use than my Verite as of late!