There seems to be a renaissance of high end closed-back headphones happening, which I can only imagine is due to the rise of newer driver technologies like Tesla, Bio-Dynamic, and Planar Magnetic. AKG is continuing the trend with the addition of their K872 Master Reference Closed-Back Headphone.

Their older brothers are more vibey and less scary, but the 872s deliver precisely what you need. The only question is: are you brave (and rich) enough to listen

AKG's new flagship headphone design offers the benefits of open-backed ‘phones in a closed-back format.