Yeah I have to say the sound hasn’t been quite the same since the ear pads came off. It’s not bad, but it’s lost a little of the low end and the highs are slightly harsher. They’re still better than the Shure SRH840 or ATH M50, and that level of headphones, but they’re not what they were. My go-to headphones for mixing now are the 1540s and the Ollos.
The FSPs are built like total shit. This was my second pair, and second headband to break within a year. I’ve also learned that the reason they sound so good is all about a combination of their isolation and very precise tuning of the ear cups and pads. You lose a bit of foam, or you get a hole in the edge of an ear pad, and the whole sound falls apart.