Thank you for helping me out sir. Though my usb c adapter is relative cheap but it's working fine with other headphones. Maybe this headphone has more complicated functions than usual. So I hope what you said is right. I can only comeback to my laptop and desk setup in the next 2 days. Hoping it...

Hi everyone. I had this trouble and I want to ask if someone can help. I have just ordered and received a sennheiser hd630vb today. But when I plug it into my usb c adapter and listen to music on my phone. Weird sizzling noise shows up. It was very noticeable if I leave music volume to minimum...