The AKG EK-500S is a 5-meter long headphone cable, with a mini XLR male connector at one end and a 3.5mm stereo male connector at the other. It is designed for use with AKG headphones that have a mini XLR socket, allowing connection to devices with a 3.5mm output such as smartphones, laptops, audio interfaces, or mixers. It offers high-quality stereo transmission, durable construction, and a flexible casing, ideal for professional and home use with great freedom of movement.