I've had the Amperior for about five days, now and amazingly, they're a lot more comfortable than I had first concluded. By setting them just a wee bit forward on my ears, I can still get a very good seal (unlike the DT1350), but ears don't hurt after hours of listening. Yay!
And I'm really surprised sometimes just how good the Amperior sounds with nothing more than a Clip+. I just attach it to the top section of the stock cable:
Lastly, if anyone is interested in a "thicker" 6-ft extension cable for the Amperior, I'm really impressed with this one made by Philips.
Note: It's every bit as thick and heavy as the top section of the stock Amperior cable.
http://www.amazon.com/gp/product/B000I3F8Z6
Mike