Ok final say on this. Owning many headphones, I have had a few over/ear, closed back headphones with aluminum/metal cups-- all with my experiences with sweat/moisture. However; I'll speak specifically about the Beats Pros (
since they are currently on sale in the apple store).
These diehard beauties have LEATHER ear cups with outside aluminum casing. I have the first version prior to the Apple acquisition of Beats by Dre, when they were owned by Monster -- exact same build however.
I've owned them over probably 8 years now and nothing is wrong with them. Being leather, they sweat, and these puppies build more moisture than a day-spa full of nude sumo wrestlers. When I take them off after a session, It feels like two moose licked both sides of my head.
So, to everyone that is up in arms over "condensation", I want you to take a time out, and really think how much you jumped the gun here. Really think how you gave into twitter/YouTube hysteria and freaked out about an issue that is old as closed back headphones are. Think about aviation military headsets all the way to gaming headsets. Think of the years of usability testing data. Then think to yourself -- is YouTube and Twitter right? or are headphone engineers right?
Apple may or may not get a lot wrong with the headphones in the coming months, but condensation is on the bottom of that list.