STAX SR-307 Electrostatic Earspeakers Headphones

SKU: FM887
Price: US$479.98
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  • Can offer more natural sound stage 
  • Adopted to achieve powerful derivability
  • Secur the reliability over a long period of time
  • Push-pull electrostatic and oval sound element



The SRS-3170 is a standard combination system of the SR-307 with the sound element featuring the same new material "super engineering plastics" diaphragm as upper models and the SRM-323S solid-state DC amplifier with all-stage direct-coupled balance output circuit configuration.

The SR-307 adopted the PC-OCC low-capacity parallel cable with the gold-plated plug, securing the reliability over a long period of time. The SR-307 can offer more natural sound stage of the electrostatic type earspeakers in combination with the SRM-323S.

The emitter follower output stage of the SRM-323S using high-voltage bipolar transistors lowered the output impedance to improve the drive capability, and also expanded the dynamic range of a high-frequency range. Moreover, the power transformer equal to that of the SRM-006tS has been adopted to achieve powerful derivability not only for musical reproduction but also for monitoring purpose of professional use.


SR-307 Electrositatic Earspeakers

Type: push-pull electrostatic, oval sound element, open-air back type enclosure (case)
Frequency Response: 7-41,000Hz
Electrostatic Capacity: 120 pF (including attached cord)
Impedance: 132KΩ (including attached cable at 10KHz)
Sensitivity : 101dB / 100V r.m.s. input / 1KHz
Standard Bias Voltage: 580 VDC (standard)
Left-right channel display: L/R display on arc assemply (inside head spring)
Solid line (left) and dotted line (right) on cable
Ear Pads High quality artificial Leather: (EP-234GR)
CordsL: Parallel 6-strand, 2.5m full length, low-capacity special wide cable
Cord Conductor: PC-OCC
Weight: 490 g (including cord),
            340 g (main unit only)
Ambient temperature and humidity for use
0 to 35 degrees celsius / max. 90% (without condensation)

SRM-323S Headphone Amplifer

Driver Unit:SRM-323S 
Frequency response:DC~60kHz / 400Vr.m.s. Output SR-307 load
Input level:100mV/100V 
Maximum Out put Level:400V r.m.s
Harmonic Distortion:0.01 or less (1kHz / 100Vr.m.s. Output, SR-307 load)
Impedance:50K ohms (RCA)
Input terminal:RCAx1 with parallel terminal
Standard bias voltage : DC 580V x 2
Power supply:AC 100V (50Hz/60Hz)
Power consumption:30W
Operating temperature range:0~35 celsius / Max. 90% Humidity (without condensation)
Dimensions:150 (W) x 100 (H) x 360 (D) mm without Knob, Pin jack
Weight : 2.9 kg

Customer Questions & Answers


Hello,  what will be the shipping costs for sending it to Switzerland? How about the customs?  Regards,  Peter

7/12/18 12:58 PM Asked.

Hi Peter,STAX SR-307 has out of stock.You can have a look at SR-L500. We can ship it to you for free.For the customs,every country has her customs policy, so we can't make promise for you.Thank you!

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