First of all, my native language is French. I have a RS127 headset and it's hard to buy a compatible spare part (ear cushion) for it. I formerly bought a RS120 part, and of course, that didn't fit on RS127. So, I had to contact Sennheiser for the right reference... which is OP-RS130 RS125... RS127 doesn't exist anywhere. So, no, I'm not fond of your products. The after-sale is not smart.