The real surprise of the lot. I was literally shocked when i first got these, as comparing them to the d2k i found a vast difference in comfort. These certainly felt lighter. Definitely around 40g I thought. But these headphones are a staple on headfi, and so many have studied in extreme depths these two headphones. How come I had never read anywhere that the d7k is lighter, by quite a measure, to the d2k. Maybe i'm imagining things. But I can't be. I hold the d7k in my hands, then i switch to the d2k. Do this a few times. So I guess i've gotta get ( actually no. Go out and buy is what happened here- no stopping headfi access to my wallet) some kitchen scales just to satisfy my curiosity.