I also still recommend
Brainwavz HM5 pads for anyone not content with the original pads. I cannot say whether they are more or less neutral than the original pads because they're so comfy I don't want to get my ears out of them, but I love how my cans sound, so. ^_^
Not to be confused with the
Thick memory foam HM5 pads. I don't know how those are supposed to work with the HM5, but they make my GMs sound
way too thin. Nothing like the signature you get with any other pads I tried (including velour DT 770 pads).
And, yes, velour pads soften the bass impact so you may try some of those too,
weissglut.