STAX SRM-T8000 Vacuum tube driver unit


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Premium vacuum tube driver unit

The SRM-T8000 is Stax's latest flagship electrostatic headphone amplifier utilising hybrid technology. It employs two 6922 in the input stage, driving a Class-A solid-state output stage. The vacuum tubes are isolated in a separate section made of a vibration-proof damper and shield cover to eliminate vibration and noise. The high-capacity large toroidal transformers and selected high-quality parts allow the highest refinement in sound.

STAX produce exclusively electrostatic headphones, or “earspeakers” since 1938. STAX chose the electrostatic technology for its ability to produce transparent sound, and low weight for comfort/ergonomics, both due to the driver design not employing fixed magnets and moving coils, as opposed to other common headphone driver designs. The minimal weight of the driver ensures a very quick response to the signal, creating a more faithful sound reproduction.


  • Frequency response: 1Hz – 115kHz / when used with one earspeaker
  • Gain: 60dB (x1000)
  • Harmonic distortion: 0.01% /1kHz
  • Input terminal: LINE1/LINE2 (RCA), LINE3 (XLR), LINE4 (optional input for future)
  • Rated input level: 100mV (at 100V output)
  • Input impedance: 50kΩ (RCA) / 50kΩx 2 (XLR)
  • Maximum output voltage: 470Vrms (1330V p-p)
  • Mains voltage: AC120V/AC220/AC230/AC240, 50/60Hz (depending on your country’s voltage)
  • Power consumption: 95W
  • Operating temperature: 0 to 35 degrees C (less than 90% humidity, non condensing)
  • Dimension: 320 (W) x103 (H) x395 (D) mm (protruding portion included)
  • Weight: 7.3kg
Stax SRM-T8000

The SRM-T8000 is the best energiser Stax has ever made, and if resolution and imaging are your audio ‘triggers’, then this is also the best energiser you can get for a Stax. Especially if you have one of the better Stax earspeaker systems, like the SR-009. 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.