I feel that it was due to the extended break in time. I've found this to be true with loudspeakers and other components in my 2 channel home stereo as well. I think the drivers can be a little stiff when they are fresh from the factory. However, I realize that audio, just like other...

I purchased the m40x headphones in November 2015. They sounded pretty impressive and balanced out of the box, but better after about a week. After reading so many reviews about the m50x headphones, my curiosity got the best of me. So, after 17 days I returned the 40s and bought the 50s.   I...