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Stax SR-009S Electrostatic Earspeakers

Stax SR-009S Electrostatic Earspeakers


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01603 627010

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Stax SR-009S Electrostatic Earspeakers


  • Type:  push-pull electrostatic large circular sound element.
  • Frequency response: 5-42.000Hz
  • Electrostatic capacity: 110pF (including cable)
  • Impedance: 145kΩ (including cable, at 10kHz)
  • Sound pressure sensitivity: 101 dB / input /1 kHz
  • Bias voltage: DC580V
  • Right/left channel indication: Gooden solid line (left) and dotted line (right) on the cable
  • Earpad: Genuine leather (skin touching portion), high quality Artificial leather (surrounding portion).
  • Cable: Silver plated 6N (99,9999%) OFC parallel 6-litzig Low capacity special wide cable, 2.5m full length.
  • Gen. weight: 563g (including cable), 441g (without cable)

Multilayer fixed electrode MLER (Multi-Layer-Elect-Rords) established with SR-009 has evolved to MLER 2. The finish and etching process that smoothes the edge of the electrode opening reduces air resistance and further improves sound permeability. Also, the electrodes themselves are gold plated with high specific gravity to minimize the resonance of the ultra-thin electrode. At the same time, due to the effect of reducing the electric resistance of the electrode itself by gold plating, we have opened up a new ground for high speed, clarity, silky details, and powerful texture.

SR-009S adopts a diaphragm made of ultra-thin super engineering plastic film. The light mass has realized a high transient characteristic throughout the entire audio spectrum.