The outlet I was trying to plug into was an upgraded outlet that I installed a few years back. I doesn?t stay out very well. But given the exceptional track record Sennheiser has had for me I am hoping these will last for years. Absolutely love the look I want to love this the size is perfect, colors are perfect, hoodie is soft. The boys are very different, but also have some things in common. Easy to see whats in each bottle. Overall I think this is better than OEM. Kinda defeats the purpose of locking them if they are plastic. Tout dabord elle est présente des 2 cotés du cable, donc impossible de savoir sans regarder ni jouer avec si lon va monter ou baisser le son, il faut tourner dans un sens pour sapercevoir de leffet appliqué.