Neumann NDH 30

I bought these headphones and within two days returned them, they enhance the mid range frequencies to the point of disturbing the overall balance, mixing tracks with a wide spectrum of sounds is virtually impossible, at least for me, while editing vocals or individual tracks can be successful, The NDH 30 tends to hide the high frequencies in dynamic tracks, which causes imbalance, focusing and emphasizing the mids, unless you push the headphones a little back on your head, which causes the lows to fade out ,I am very disappointed