Well, it was about time. After 10 years of constant wear, almost 8 hours a day, my pads had turned brown and crispy. By buying these replacement pads my headphones just feel like new and also sound better! Definitely worth and I don't regret it. Don't loose your time washing the old ones, grab yourself a new pair for 20⏠and enjoy your DT 770 Pro for another 10 years! Top quality and I was not expecting anything else from Beyerdynamic!