The AKG K 270 Studio is a closed-back, over-ear headphone. It features a self-adjusting headband for a comfortable fit and is designed for professional studio monitoring and mixing. The headphones have a frequency response range of 10 Hz to 22 kHz and an impedance of 55 ohms. They come with a detachable 3-meter cable and a 3.5mm to 6.3mm adapter for versatile connectivity.