Skullcandy is an audio equipment manufacturer headquartered in Utah, USA, with headphones, earphones, Bluetooth speakers, and other products as its main offerings. This is the logo of "ROC NATION," a music and entertainment company. The logo appears to be a metal plate attached to leather goods, etc. ROC NATION was founded by Jay-Z and operates in a wide range of businesses, including a music label, talent management, and apparel. It's quite worn because I used it a lot. The headphone covers need to be replaced. What kind of sound is it if you use it at home? It's good. It has a unique quality that makes it feel different from what you're used to. You can tell the difference from cheaper ones. There was no sound distortion or crackling.