Actually for my noggin it's the other way around. The HE-6s are quite poor in the comfort environment; while I can listen to Audeze headphones for hours on end.You do realize this isn't the HE-6 thread? FWIW, I've owned both headphones for over a year, but I still own the TH900s.
Yep, that's the Grattle. I'd contact the seller and let them know. See if you can return them for a refund if you got them that way out of the box. Worst case, you can send them into Grado for repair. I've seen costs of about $100 or so to replace the drivers. Good luck!
I have, but I'm going to go with my experiences instead. I think it's a total fail for a pair of portable headphones to require external amping to sound really good. They should sound close to their best right out of your player.
Look at that huge carrying case. Large and thick. The other headphones you mentioned all fold up pretty well. The M100s don't and aren't that portable.But I suppose if anyone wants to loan me a pair, I'd be happy to add them to the listing. But I have zero interest in spending my $ on them.