Crazy idea, but I decided to put some Grado G-cushions on mine. They make the CAL2 sound more like a Grados, if you're into that. And by that, I mean it kills the bass and makes them mid and treble freaks. Also, they sound extremely open and feel really nice / lightweight on the head. I'm going to try to tape the sides of the pads and see how it affects the bass and overall tightness in the sound. But I guess they're okay if you want a break from the typical CAL2 dark sound signature.
That's a Creative mod!