The MB Quart PMB 15 is part of the PMB series of headphones, designed with a focus on delivering quality audio performance. Built in Germany, this model features a dynamic open design, which enhances sound quality through natural acoustics. The PMB 15 has a nominal impedance of 2x 60 Ohms, making it compatible with a variety of devices. It can handle rated power up to 0.1 Watt and offers a frequency response range from 10 Hz to 22,000 Hz, providing a wide spectrum of sound. The distortion factor is maintained at less than 0.5%, ensuring clear audio without significant interference. The headphones deliver a sound pressure level of 92 dB, which is relatively high, indicating good efficiency in converting electrical signals into sound. The PMB 15 utilizes a jack plug with a diameter of 6.3 mm and comes with a cable length of 3 meters, allowing for flexibility in movement.