Purchased in 2023. Used about 3 times for practicing musical instruments, but I stopped using the instrument afterwards, so I'm selling it. It has been stored in a bag. About this product: Impressive sound quality: Equipped with 50mm neodymium drivers for DJs, it achieves a wide sound stage with clear, extended high frequencies and warm low frequencies. Boasting high input that allows for accurate monitoring even in loud environments such as clubs, it reproduces clear DJ sound without distortion even at high volumes. Instrument practice and music sharing: Both sides of the headphones have 6.35mm and 3.5mm jacks. When connected to an instrument, you can maximize the functionality of the headphones using a power amplifier. Two types of cables are included to choose from depending on the situation, allowing you to enjoy stereo music simultaneously on one device. 【Comfortable fit】 Ergonomically designed, it adopts high-quality, comfortable over-ear pads that are flexible and breathable, with high sealing and sound insulation, making it suitable for long hours of use in the studio. Single-ear monitoring: The ear pads have a monitor structure that can be rotated 90° forward and 180° up and down for single-ear monitoring. It is foldable and easy to store and carry. It can be used for everyday use, as well as for music appreciation, DJing, music production, mixing, and monitoring. 【High-quality design】 The ear cups are designed to resemble the surface of a record, and the smooth, glossy material is resistant to fingerprints and sebum. The texture and appearance are high-quality, and it is lightweight and compact, without feeling heavy.