Yes i've tried that. But the plastic headband returns to its natural state quickly. It must have softened over time. I am looking for a metal headband i can attach to it so the clamp is as tight as possible. The Beyer one does work ; in that, it adds more clamp. I added pro beyer headband, and had the metal bit under it. Weight does go up though. When i push them closer than what they are now, the sound is near perfect. And when i had the sheepskin (hm5 which i squished as much as possible) , it was too thick, but with the cups pressed closer the sound is good, and i prefer the sheepskin over pleather. They have that vintage German sound like the 48 with more extension in the low end which is gravy for me I am very happy to have these in my arsenal , just wished Sennheiser made a metal headband!