First I searched for hours the www and God knows how many read customer reviews. The in my opinion much too highly acclaimed Beats (Solo 2, Studio 2.0, Mixr) I also tested - and was not satisfied.
On the one hand they were at least with me not comfortable but expressed too strongly to the cushions in my opinion. Secondly, I felt not shown the bass and treble clean. Some high-priced Sennheiser models I tested also, but these oppressed me too much.
After I spent more days with research, I looked to see what actually what headphones says the audio magazine. Here very good reports were read and give the AKG K551 even ranked No. 1 on the best On-Ears under 300. But we have to say that the big ear cups do not sit on the ear, but it enclose comfortable. After a short time I ordered then so this model in the hope that the headphones would be a few hours at a time without pressure portable and would thereby provide a clear sound.
So ordered - delivered - unpacked. "Ui, the ear cups are so huge," at first I thought, "Whether the will fit well?"
For this, the short note: I am not a particularly tall woman.
And then when I try to put on the headphones, I was already excited. The padding of ear cups are incredibly soft and adaptable, as at least I yet did not know that. Because the ears are completely enclosed, outside noises are very well damped even without music and even the cushion on the bow did its purpose well and snuggled up nice and comfortable at.
In other reviews I already read that one the best headphones for several hours "which records" before they were then actually used and thus listens to music. So I did just overnight and the next day then it went off.
Direct again impressed by comfort of the AKG K551 I tested the music playback on the iPad 4. UNBELIEVABLE, more can one say barely! I offered an incredibly clear sound that both the heights and the depths, absolutely not faltering. In addition, the sound is not distorted by excessive unnatural similar Basslastigkeit what I was important.
For sample I tested House, RnB, Classic, Pop, Rock ... actually a bit of everything and here I could find that the sound quality, or better audio experience, always had the same outstanding.
A good result was just me both on Samsung Galaxy S4 (here the control not working on the cable, as described in the product description nachlesbar), as supplied on the laptop.
And next business day at the office all colleagues (IT nerds) also wanted time to test my great headphones and these were also all thrilled.
The only drawback: Unfortunately, the cable is not interchangeable, which is in itself could be in the price range and the high quality of the headphones already expected - after all you do not want to throw away such a part, just because the cable is probably broke.
But since the very positive factors outweigh more than clear, I hereby speak from a unique buy recommendation!