This is the T1 2nd Generation. The earband became sticky, and while trying to fix it myself, I removed the earcups and couldn't put them back on, so I'm listing it for sale. There are no issues with the sound, and I believe you can experience a wonderful sound. I would like someone to become the second owner. I bought a new headband cover, but I think I used it incorrectly. It tore even though it was new. Returns are not accepted, so thank you for your understanding.