Needless to P7 itself the positive reviews add another, In addition to this I still have the P5 and the PSB M4U 2 ... no comparison. Sure it will give KHS with even finer resolution and still räumlicherer playback, but then exorbitant price. As an overall package, plus sound materials and workmanship of P7 every penny is definitely worth it. Of course the setter is important: I run the P7 at a Fiio X5 + KHV Fiio E12 and am completely thrilled. Who Stoppers these headphones to a smart phone did not understand anything and did not deserve the P7 ;-) After three months of use, however, a defect made itself at my copy noticeable: distortions in the left channel, particularly at higher volumes. The day before yesterday I asked Amazon, as the warranty processing is to pass. And ... believe it or not ... yesterday, so about 24 hours after my request brought a brand new DHL P7. Now I have 30 days to send back the defective part. Six stars out of five stars for customer friendliness! Thanks Amazon!