I purchased these a few years ago and used them a few times with an amplifier, but they've mostly been sitting next to my monitor. There's some dust and minor scratches, but I've confirmed they still work and there's no visible damage. The ear pads don't show significant deterioration. (Please check the photos.) The following is quoted from the official website: A long-selling model that combines basic monitor performance with excellent cost performance. Newly released as a closed-back type with sound quality adjustments. From professional studio monitors to listening with portable players, it also exhibits excellent design as a fashion item. ● This is the latest version of a long-selling model that has been spreading our sound quality around the world for over 20 years. ● Newly adopts a closed-back type with excellent sound insulation. Equipped with a high-quality 40mm driver, it realizes dynamic bass and delicate and natural high-frequency reproduction. ● Based on a design philosophy intended for studio use, it can be used in a wide range of applications, from personal studios to professional recording sites. ● The ear pads use high-quality synthetic leather with a good feel, allowing for comfortable monitoring even during long hours of use. ● We have a lineup of four color variations: BK (matte black), BL (turquoise blue), RD (carmine red), and WH (shell white), so you can choose your favorite color to suit the scene. Type: Closed-back, dynamic Driver: φ40mm Frequency response: 10～35,000Hz Impedance: 70Ω Sensitivity: 100dB/mW Maximum input: 100mW Body weight: Approximately 265g Cable length: Approximately 1.2m Plug: Φ3.5mm gold-plated stereo mini plug (straight) ⚠️Caution⚠️ This product is discontinued. Some dirt etc. can be seen. Please make your judgment based on the photos. This is not a gaming headset.