STAX SRM-D10 Amplifier and SR-009S Earspeakers System


SR-009S uses multilayer fixed electrode MLER (Multi-Layer-Elect-Rords) established with SR-009 has evolved to MLER 2. The finish and etching process that smooths 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.

The SRM-D10 is the world’s first compact electrostatic amp/DAC. Now, you can enjoy the freedom of using all modern Stax electrostatic headphones (PRO bias) anywhere you go. The built-in high-resolution DAC is capable playing up to DSD128 files.

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Type: Push-Pull Open Back Circular Electrostatic Headphone

Frequency Response: 5 – 42,000Hz

Electrostatic Capacitance: 110pF (including cable)

Impedance: 145k Ω (including cable, at 10kHz)

Sound Pressure Sensitivity: 101dB / 100V r.m.s. 1 kHz

Maximum Sound Pressure: 118dB / 400Hz

Bias Voltage: 580V DC

Left & Right Identification: “L” and “R” indicated on the arc assembly (inside head spring) Left channel cable is marked with a solid Line. Right channel is marked with a dotted Line.

Ear Pads: Genuine Lamb Leather (direct skin contact), high-quality synthetic leather (surrounding portion)

Cable: Silver-coated 6N (99.9999%) OFC parallel 6-strand, low-capacity special wide cable, 2.5m full length

Weight: 1lb without cable / 1.3lb with cable


5-pin PRO bias Stax earspeaker output

MicroUSB digital input,

3.5mm analog input

Supply voltage: DC 14V (charger included)

Frequency response: 20Hz – 40KHz (+0dB,-3dB)

Rated input level: 230mV (100V output)

Harmonic distortion: <0.025% / 1KHz-10KHz

Input impedance: 10 KΩ (analog input)

Maximum output voltage: 200Vr.m.s / 100Hz-10KHz

Power consumption: 6.4W (USB input) 5W (analog input)

Recommended operating temperature: 0-35°C, <90% RH (No condensation)

Additional information

Weight 10 kg