I was thinking of these headphones: https://www.massdrop.com/buy/akg-k7xx-massdrop-first-edition-headphones They are: 'Massdrop x AKG K7xx Audiophile Headphones' Would like to hear about experiences from people who have listened to these: - sound and build quality? How is the comfort on these. From what I have read the ear cups are shallow. Is this a problem? I think I plan to use these from a computer and a blu-ray player. I'm not sure of the quality of my computer sound card, as I have only used cheap earbuds. If I need a dac/amp I was thinking of getting the o2 and a dac: https://www.jdslabs.com/store/#objective-line Would this be a good choice? Are these good headphones and amps/dacs for the money? Other choices? Thanks