I was comparing Koss to Sony ECR500 and Sony surprisingly still sounds very good. I would say not as good as Koss, but very liquid with lower end authority and good soundstage, and this is with default "sweaty" pads. This makes me think that new pads on Sony will make them sound better and make them that much more comfortable. Anyone know how if someone makes pads for ECR500? Maybe Vesper Audio can do make them? I think SR-007 style pads would work. Spritzer, did you ever swap pads on ECR500? What style worked?