This is the Dan Clark Audio Stealth, a closed-back flagship model. I purchased it new and used it with care, but from the beginning, there was noise when touching the connector between the cable and the main unit. I consulted the store where I purchased it during the warranty period, and they replaced it with a new one. The purchase date in the photo is the date of that replacement. After the new replacement, I only used it for about 60 hours. Also, I used a separate XLR 4-pin cable, so the original cable was used for even less time, about 15 hours. After the replacement, there were no problems, and I used it with care, so in my subjective opinion, there are no noticeable scratches on the main unit. A price increase is planned from the 15th of this month, and purchasing a new one will be very expensive. Please take this opportunity. I used it for desk work, but my environment has changed, and I have switched to open-back headphones, so I am selling it. Thank you very much.