Did the KH directly compared with Ultrasone Signature Pro, T51P and Sennheiser Momentum (on ear). Processing of T5P was not very good, folds of the leather on the headband and poor processing of Hörpolster - something may in a 1000 KH not really come through the quality control.
Sonically the upper midrange and treble emphasized the KH very strong, which quickly leads to fatigue. It may be that there many such like, but I found the sound too aggressive, and the bass disappeared behind it too much if we undertook no correction with EQ settings, but this leads to other sound degradations - at least on the iPod.
The T5P is downright painful for my taste in the mids and highs - and I am over 50 and would therefore no longer even perceive as a 20 year old so the heights. It's just important that you test the KH with the preferred music and the intended playback device. For use on the iPod, the purchase is worth in any case I think not - in this price range is better to consult with the Ultrasone Signature Pro - less biting highs / mids, better spatial impression and balanced sound perception.
The Sennheiser Momentum afforded a remarkable good result from - rich bass, treble, and good spatial reproduction - especially since it was by far the most affordable headset in this comparison. The T51P sounds much warmer in direct comparison, but the whole thing is really a matter of taste. From the outer appearance, he is much more attractive than the more expensive by 80 T51P.
I would recommend the Ultrasone music connoisseurs who listen to a lot of classical music, the momentum for budget-conscious connoisseurs, and the T51P for those who primarily want to use mobile and the iPod to KH and warm, prefer deep bass.
