STAX SRM-D50 Electrostatic Headphone Amp/DAC


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DAC and electrostatic amplifier

The SRM-D50 is a high-performance electrostatic driver and Digital-to-Analog Converter, inspired by the battery-powered SRM-D10. With an elegant all-in-one design, the D50 creates a simple solution for any music lovers to experience the legendary sound of Stax earspeakers.

The SRM-D50 offers a complete electrostatic experience to plug-and-play on any desktop or audio rack. All you need is a USB or Coax digital audio connection, and you are good to go, for the first time ever from STAX!


Supports various audio sources such as USB / optical / coaxial digital input, RCA analog input etc. ESS DAC chip supports files with audio signal maximum DSD 5.6 MHz, PCM 384 KHz. Adopt R core power transformer with less leakage flux. Displays the strength of input signal with VU meter. Adopted 4 mm thick nonmagnetic aluminum cover.


  • Frequency Response: DC-40KHz
  • Input Impedance (RCA): 20kOhm
  • Maximum Output Voltage: 400Vrms
  • Power Supply Voltage: 14VDC
  • Power Consumption: 35W
  • Dimensions: 268mm x 192mm x 67mm
  • Weight: 4.5 kg
Stax SRM-D50 Electrostatic Driver

The Stax SRM-D50 is purpose-built and high performance. It's a truly endgame all-in-one unit that may even negate the need for anything else in your audio chain. If you already own Stax earspeakers, this is a recommended upgrade. more...

Due to the bespoke nature of our high-end music systems this product is not available to be purchased online. Please contact us for personalized service from one of our team of experts.