Open-back FiiO JT3 headphones, black. Released on November 21st. Arrived on November 23rd. Used for a total of about 10 hours. The headphones next to it in the photo are AKG K701, shown for comparison. The reason I bought the FiiO JT3 was to compare its sound quality and fit with my beloved AKG K701. I will refrain from describing my personal opinions, as preferences vary from person to person. There are no defects, so please rest assured. However, please be aware if you are using open-back headphones for the first time. As you may know, open-back headphones have low efficiency, so it's better to use them with a headphone amplifier, etc. I look forward to comments from those who are interested. - Brand: FiiO - Model Name: JT3 - Type: Open-back headphones - Color: Black