The Sony MDR-25 is an over-ear headphone model designed to deliver high-quality audio reproduction and comfort for long listening sessions. It features a closed-back design that helps in providing effective noise isolation, making it suitable for both casual listening and professional use, such as studio monitoring and sound editing. The headphones have a frequency response range that typically spans from 10 Hz to 25 kHz, allowing for a good representation of bass, mids, and treble. The impedance is generally around 24 ohms, facilitating compatibility with a wide range of devices, including portable music players. The ear pads are designed for comfort, often made from soft materials that help reduce fatigue during extended use. Additionally, the headphones may include a coiled cable that prevents tangling and provides flexibility for movement while listening. A folding design allows for easy portability, making it convenient for on-the-go users. Overall, the MDR-25 aims to cater to both enthusiasts and professionals with its blend of sound quality and practicality.