Excellent headphones in very good quality

I now have quite a few Headphones behind me, but when I compare these Sennheiser with my past, I have to say: Absolutely top class! What many forget when the bad reviews, is which output device is used and in what quality the audio or MP3 file is recorded. These headphones used with me with an iPod Nano 1st generation (without volume limitation) and an ordinary LG phone. The playback on the iPad is superior: (Bass Bin Fan) Rich bass, absolutely clean demarcated highs and midrange areas as well as quieter and very loud music. For testing, I used music of Safri Duo (likely to meet the highest standards!). When mobile, the output quality was initially very good, but after installing a free equalizer app (Music EQ), which incidentally is very good to use, the issue was also excellent here until class. The workmanship is very good, introducing a bit strange in the ears, but in no way leads to the devaluation, within a short time will be no longer otherwise. Cable fine, angled connector can be beneficial, so what more could you want? Bin äüsserst satisfied and would buy these headphones any time.