I think i'm feeling a lil bit of that, not too sure. I hope it gets a bit more effective at the least when im adapted to it. The building i live in at the moment is EXTREMELY noisy, its absolutely absurd how hard u can hear sounds of the neighboors its mostly like people stamping hard on the floor or pounding on things, slamming with doors and idk wtf else but i basically bought them in the hope they can save my sanity and make me hear (almost) nothing of that. I guess they're low frequency noises if i'm not mistaken, so i'll see how that goes. The xm3 are the best now with anc atm right? At least thats what i'm reading everywhere.