Just installed my Ori - Lambskin pads on my trusty old HE-400 (my first planar) and what a welcome difference it makes. All frequencies sound "righter" and more natural than before, comfort is incredible and I am rediscovering these headphones after some neglect. Am really happy with these - they are my second set after I got the same in an earlier drop for the HE-560 where they perform equally well. If you are thinking of getting these pads in a future drop - don't. I mean don't "think" about getting them -just get them. :-)