So I’ve had a pair of Grado SR80 headphones that I use at work for about a year, and while they sound quite amazing, I’m getting to the point where the comfort factor just isn’t working for me anymore. I remember reading quite some time ago that you could replace the ear pads with some from Sennheiser. In the process of trying to find information about that I came across this page which has all kinds of crazy Grado mods.