I just changed out the thinnish stock pads for the brown HM5 pleathers. I can't hear any glaring changes from stock at all, really. If there is any slight change, it's completely negligible compared to the improvement in comfort...(my ears rubbed a little against the drivers with the stock pads). These things sound stupid good for the 125 I paid for them, even straight out of my Mac Pro.
6/30/15 at 11:51am