After well about 15 years in the Hi-fi hobby i am fully without a doubt fully content and sure that it will be a LONG time before i use more money on this hobby than i already have, i now have a topping D70s Dac and a smls SP200 Thx aaa 888 amp to power them, i must truly say that it really tok a lot of convincing of my financial brain to take the plunge and order but i truly did not regret a second and that is well after the honeymoon phase, this is by far the best sounding headphones i have ever had, and i have had quite a few over the years. Hifiman he 400, 560, Audeze LCD 2 classic, LCD 3, alot of Audio Thecnicas and lots of other aswell! expensive as they are they are the also are insanly good, and the funny thing is that they get better when you get used to them but i guess that relates to anything you like and have invested ALOT of money in, anyway thats my 2 cents on these anyway. enjoy music my fellow music lovers out these are the the state of the art headphones we have been hunting as far as i can hear! This is of course just a personal opinion and should never be used as anything other than that, in the spirit of what this forum is, and by the way i am so unbelivible happy i stumbled upon this site! this has by far been my NR.1 resource of unbiased info in the hobby the last few yers and i must confess it been a blessing in the skies.