The Pioneer SE-500 D is a pair of dynamic stereo headphones notable for their closed-back design, which aids in sound isolation and provides a more immersive listening experience. These headphones are designed with comfort in mind, featuring an adjustable headband and soft ear pads for extended wear without discomfort. The SE-500 D aims to deliver clear and balanced audio across a range of frequencies, making them suitable for various listening preferences. The build quality is sturdy, aimed to withstand normal wear and tear, and the design is generally sleek and functional. The headphones have a frequency response range from approximately 10 Hz to 25 kHz, ensuring that both low-end and high-end sounds are well represented. The impedance is typically around 32 ohms, allowing them to be driven adequately by most consumer audio devices, including smartphones and portable music players.