Stax SR-407 Signature Electrostatic Earspeakers (Demo Unit)

Discount 19% List price: £412.50
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The first SR-Λ (lambda) series was introduced 30 years ago, and now (Sep 2010) the SR-407 has accomplished further evolution with its new sounding body (sound element). The conventional sound element has employed simplest structure so that the widest possible film diaphragm area can be effectively used in comparison with its external size. Taking advantage of the conventional feature, the new sound element has been packaged in a tough resin case. Thus the new sound element has cleaner sound and more accurate sound image.

Also, the new thin-film material are almost free from stretch from temperature or humidity, enabling both the rich, deep low-frequency and delicate high-frequency sound.

Low capacity wide adoption: SR-407 employs a wide range of special low capacitance cables which means that there is the tiniest loss of signal from the driver unit/amplifier to the earspeaker.

TypeElectrostatic, Open, Oval Sound Driver
Frequency Range7~41,000Hz
Capacitance110pF (including cable)
Impedance144KΩ (including cable at 10KHz)
Sensitivity101dB/100V rms
Standard bias voltage580 VDC
Cable2.5m, 6 strand, Wide format, Low Capacitance
Weightwith cable 515g, without cable 340g

Total Weight
in Retail box

Standard EarpadsEP-234BR
Compatible EarpadsEP-234 series

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Headphone Features

Transducer Type:
Ear Cup:
Open Back
Headphone Type:
  • Electrostatic Headphones
  • HiFi Headphones
Frequency Range:
7 - 41,000
Cable Length (m):


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