The Stax SRM-007tII is an electrostatic headphone amplifier that provides a premium listening experience tailored for use with Stax electrostatic headphones. It is designed to deliver high-quality audio reproduction with an emphasis on low distortion and a wide frequency response. The amplifier typically features a vacuum tube circuitry design, which offers a warmer and more organic sound signature compared to solid-state designs. The SRM-007tII comes with various input options, allowing compatibility with multiple audio sources, and its build quality reflects careful engineering aimed at audiophile-grade performance. The unit also includes an output for a second pair of headphones, enhancing usability for shared listening experiences. Key specifications often include an output voltage of approximately 580V, frequency response spanning from 7Hz to 50kHz, and a total harmonic distortion rating that keeps audio fidelity intact. Ensuring optimal audio performance, the amplifier is equipped with various controls to adjust the volume precisely, providing an immersive listening experience.