The Stax SRM-007t is a driver unit for electrostatic headphones, utilizing a vacuum tube output for amplifier functionality. Its design features a pure balance amplifier structure that avoids passing signals through transformers or inversion amplifiers, enhancing sound fidelity. The operational principle relies on a push-pull input system, achieving sound reproduction through the interaction of opposite electrical signals across a lightweight diaphragm. This design minimizes distortion, phase issues, and electromagnetic interference, ensuring clarity and a high level of dynamic range. The amplifier incorporates a two-stage amplification structure leveraging selected low-noise FETs while maintaining non-inductive coil resistance to enhance sound quality. Notably, the SRM-007t employs a high-voltage dual triode output stage and a DC ignition type heater power source that further improves the signal-to-noise ratio. The device provides multiple inputs, including one balanced XLR input and two RCA inputs, designed to minimize interference and accommodate various audio sources. Its specifications aim to realize optimal performance for modern high-density audio formats like SACD, making it suitable for detailed and high-fidelity listening experiences.
