I didn’t immediately decide to buy (expensive), but when I received them, turned them on and put them on (without music), I ended up just in “space”, the external noise was completely cut off - like in a vacuum! It's just a wow effect! For me, they are perfectly balanced in range, the music sounds 5+. 20 steps of NR adjustment allows you to choose your ideal combination of "music / outside world". I am completely satisfied, even the price now seems justified))