An electrostatic headphone amplifier is a specialized device designed to drive electrostatic headphones. Unlike traditional headphones, which use dynamic drivers, electrostatic headphones rely on a thin diaphragm suspended between two conductive plates. This design requires a high-voltage signal to operate effectively, which is where the amplifier comes in. The amplifier boosts the audio signal to the necessary voltage levels, allowing the headphones to produce clear and detailed sound. It typically features a power supply to generate the high voltage and may include various controls for adjusting volume and sound quality, ensuring an optimal listening experience.