erics75
Headphoneus Supremus
Yes it definitely feels like it has the worst clamp of the bunch, and did take quite a bit more time to loosen up than my 600/650. The 600 oddly was just fine out of the box, clamp wasn't bad at all. But the 650 also had a strong clamp.I've noticed the HD 6xx line can vary some in terms of clamp. The HD 660S and HD 600 were perfectly fine out of the box. The HD 660S2 and HD 650 were vice grips and stayed so for a while. I had to end up stretching the S2 recently as it still didn't reduce as much as my other Senns.