The Pioneer SE-505 is a pair of dynamic, stereo headphones designed for general listening applications. This model features a sleek and ergonomic design, providing comfort during extended wear. The headphones utilize a 40mm driver, which contributes to their dynamic sound character, producing a balanced audio profile with clear highs and robust lows. The impedance of the SE-505 is rated at 32 ohms, allowing them to be easily driven by a wide range of audio devices, including portable players and home audio systems. The frequency response range is typically within 20 Hz to 20 kHz, which covers the full spectrum of audible sound. Additionally, the SE-505 is designed with a lightweight construction and cushioned ear pads, offering both comfort and isolation from external noise. The detachable cable design also adds practicality, allowing for easy replacement if necessary. Overall, the Pioneer SE-505 features a combination of sound quality, comfort, and versatility for personal listening experiences.