How is clamping force and overall comfort on the 7520? The 7506 were a bit too snug for me and wanted to know if they are the same. I also assume that the 1R-A is more comfortable - I tried them at Best Buy and can't imagine the 7520 being better but would be nice if they were close.
I have to admit. I almost let the 7520 go when I first got them. I have largish ears, big head and did not find the 7520 comfortable initially. But because the sound kept growing on me I kept listening. In time the clamping pressure lessened and I'd say they are fairly snug now. I'm still using the original pads. As a pro tool I'm glad they have some clamp because they aren't falling off while I'm playing piano
The 1r is more comfortable. Pads are more plush.
The 7520 is like a pro version of the 1r though sonically.