Hi!   This is my first mid range headphone, i dont have much experience with audio products, but i have always been interested in audio and it's terminology so i will do my best.   Now, what was i looking for in a headphone? I was looking for a headphone that had a great balanced sound, acceptable comfort, was robust enough that it would survive not to carefull use for several years, i did not care about looks, removable cables (although that would be a nice thing) and size, so i went looking.   The AKG k550's stood out to me, nice build and...