Well, it's common knowledge that the pad affects the sound of Grado's A LOT, because of the pad's shape, thickness, proximity to the ear, tightness against the ear, etc. etc.
It's also common knowledge that Radio Shack pads work well with Grado headphones, especially if you're a bass-head.
I told you to go to radio shack and maybe pick up that CD player, right? Pick up some headphone pads that will fit your Grado's there, too.
And, btw, with the SR-80's, and those pads, and some power being fed to them, you *will* feel the impact, or I'll eat my shoe...