◉ Please be sure to read my profile as well. I would like to pass this on to someone who will cherish it. I would be happy if you could purchase it after carefully viewing the photos. The color of the photos changes depending on the intensity of the light, the color tone, and the angle of the light. Therefore, there will be subtle differences in color. Please note that there may be differences from the actual product. ◉ As I turn 70, I would like to gradually offer for sale some of the collections I have gathered and cherished, starting with the good ones. It's not because I no longer need them. I am now an elderly person, and I worry that they might eventually be thrown away as garbage. I would be happy to pass them on to someone who will cherish them. ◉ This is the AKG professional closed-back studio headphone "K 271 MK II". ◉ Closed-back over-ear design: Provides high sound isolation and minimizes signal leakage (sound leakage) to studio microphones. ◉ Self-adjusting headband: Provides optimal fit and comfort even during long hours of use. ◉ Detachable cable: Comes with a 3m straight cable and a 5m coiled cable (when extended), which can be replaced depending on the application. ◉ Replaceable ear pads: Both leatherette and velour ear pads are included, allowing you to change them to your liking. ◉ Wide frequency range: Features a wide frequency response from 16Hz to 28kHz, providing accurate and natural sound. ◉ Low impedance: The rated impedance is 55Ω, compatible with a wide range of audio equipment from studio equipment to portable devices. ◉ Note: Even if it is new, there may be scratches, uneven paint, color spots (lines/dots), etc., that are thought to have been present since the time of manufacture. Especially for gold and silver decorations, many are done by hand, and brush marks may remain. There may be really minor defects. Please understand this beforehand. ◉ After purchase (new), I listened to it once or twice, and then stored it without using it. Please understand this beforehand. I have multiple AKG headphones. I would like to offer for sale items that are close to new for my collection.