The AKG K 171 MK II is a pair of closed-back over-ear headphones designed primarily for studio monitoring applications. They are built to offer accurate sound reproduction, enabling users to evaluate recordings and mixes with precision. These headphones feature a circumaural design that provides good isolation from external noise, which is vital for professional audio environments. The K 171 MK II headphones are equipped with a 40 mm driver that delivers a frequency response range of 5 Hz to 41 kHz, ensuring a wide and detailed sound spectrum suitable for various music genres. The sensitivity rating is around 105 dB SPL/V, which allows for loud playback levels without distortion at standard audio interfaces. The headphones have an impedance of 55 ohms, making them compatible with a wide range of audio sources, including portable devices and studio gear. They come with a coiled cable that extends to 3 meters and includes a 3.5 mm jack with a 1/4 inch adapter, enhancing their versatility for different equipment. Furthermore, the K 171 MK II features a comfortable padded design for extended listening sessions, and the self-adjusting headband helps provide a secure and personalized fit, ensuring they remain comfortable during long periods of use. Overall, the AKG K 171 MK II combines comfort, durability, and sound quality, making them suitable for both professional and casual audio enthusiasts.