The SR-009 is the product of repeated research trip to techology and material search without deviating from our stance to return to live sound and music always with refined sensitivity.

Price: $5200

* Woo Audio is an authorized STAX dealer.

* Shopping cart applies to the U.S. buyers only. International buyers please contact for shipping cost and payment instruction.

    Technical Specifications :
  • Type: Push-Pull Electrostatic circular sound element, open-air type enclosure
  • Frequency response: 5 - 42,000Hz
  • Impedance: 145k Ohms (at 10kHz)
  • Sensitivity: 101dB / 100V r.m.s. 1 kHz
  • Maximum sound pressure level: 118dB / 400Hz
  • Bias Voltage: 580V DC
  • Left & Right Channel Identification: 'L' and 'R' indicated on the arc assembly
  • Ear Pads: Genuine leather (Lamb)
  • Cable: Silver-plated 6N (99.99999%) OFC low-capacity wide cable 2.5m
  • Ambient Temperature & Humidity: 0 to 35ºC / 90% max. without condensation
  • Weight: 596g, (454g without cable)
    Features :
  • Diaphragm - Newly developed sound element adopts in the SR-009 is a new high polymer ultra-thin film material called super engineering plastics, that is reinforced and much thinner than conventional engineered plastics.
  • Electrodes - New electrodes named MLER (Multi Layer ElectRodes) have been developed, using ultra-precision photo etch and high tech heat diffusion.
  • Enclosure - Abundant use of precision machined light-weight aluminum
  • Cable - Silver plated, High purity copper wire 99.9999% (audiophile grade)
  • Headband - New style ARC assembly. A new 10-click slider mechanism for pad adjustments achieves optimum comfort. Once adjusted, the slider will maintain its position so readjustment is unnecessary
  • Genuine leather ear pad. Lamb skin earpad for utmost comfort.