The Stax SRM-D50 is an electrostatic headphone driver that is designed to work specifically with Stax electrostatic headphones. It features a combination of high-quality audio circuitry and a dedicated headphone amplifier, providing an optimal listening experience with enhanced clarity and detail. The device includes a digital-to-analog converter (DAC) that supports multiple audio formats, making it versatile for use with various audio sources, including computers and mobile devices. It is known for its compact design, user-friendly interface, and ability to drive Stax headphones with high precision.