Of all three inspired me the Beyerdynamic most. He had the best / most detailed highs and a nice but not too intrusive, Bass. The known Beyerdynamic "Beyer-peak" (very sharp auspeprägte heights), which has, for example, the DT-770 Pro / 250 Ohm is non-existent as well. The Klipsch Image One the other hand, is a pure "Bass Monster" which gives me headaches in the long run. When AKG K518 LE heights were cut off to me / dull. Sonically is the little brother of the big DT-770 Pro and a perfect match for the go for me the DTX 501P. The small DTX manages to build even a small stage on what the other two competitors have failed.
Even the comfort thrilled me when DTX 501P most. He has all three of the slightest pressure on the ears, but still sits firmly and stably on the head and not slip. After a few minutes to register not more that I have the headset at all on already. The AKG for example acts as more like a vise. He sits too tight on my head, pushing quite strong.
From a processing perspective, all three are relatively similar. None of the three acts processed cheaply or waklig.
Conclusion: Who does not need wummerndes Bass Monster and value to clearer sound sets for the Beyerdynamic DTX 501P thoroughly recommended. In my opinion (rather said ears) are in the segment below 100 no better on-ear headphones!
