The Stax SRM-353XBK is an electrostatic headphone driver unit designed to deliver high-quality audio performance in conjunction with Stax electrostatic headphones. It features a compact and sleek design, suited for both home use and professional environments. The unit is capable of providing a pure and dynamic sound output, harnessing the unique characteristics of electrostatic transducers. Key specifications include an output impedance of about 145kΩ, a frequency response range of 7Hz to 41kHz, and a maximum output voltage of around 450V. It is equipped with a low-noise circuitry that enhances the overall listening experience by minimizing distortion, making it ideal for discerning audiophiles. The SRM-353XBK is designed to operate with a variety of Stax electrostatic headphones, contributing to a seamless pairing that emphasizes transparency and detail in the audio reproduction. Additionally, the unit typically comes with user-friendly controls for volume and has several input options to accommodate different audio sources, ensuring versatility and convenience.