STAX

SR-009s with SRM-700S Bundle Set

The earspeaker SR-009S which adopts second generation fixed electrode (MLER2)
is born this spring.

MLER (Multi-Layer-ElectRodes) is our company's name for multilayered fixed electrode established with SR-009.

SR-009S comes with 6N hybrid cable, genuine leather ear pad etc., and with the following improvements

 

The SRM-700S is an electrostatic headphone driver utilizing a fully discrete dual FET. The output of the J-FET and the large current emitter follower circuit are low noise. Accurate music reproduction is realized without missing any fine details.

New semiconductor driver with J-FET in the amplification stage. The custom-made, low-noise dual FET is low-noise.

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Sound element with new fixed electrodes

If the fixed electrode becomes infinitely thinner, the air resistance will be decreased and the permeability of sound waves will be improved. On the other hand, thinner electrodes are poor in rigidity and suffer from vibrations of their own and the sound becomes muddy. The SR-009S evolved further the electrode established in the SR-009 as the integration of present technology. The edges of electrode hole were smoothened through after-etching processing to reduce air resistance, and the permeability of sound has been much more improved. Moreover, gold plating processing with large specific gravity further decreased the electrode vibration. Finally, the sound clarity has been achieved by reducing the resistance of electrode itself.

Tough solid aluminum chassis

Tough solid aluminum chassis employed secures firmly the sound element, contributing to improve the clearness of sound. Furthermore, the case thickness has been reduced to the limit, making the flow of condensation-and-rarefaction air wave from the sound element more smooth.

Intensity has been increased by giving roundness to the "guard mesh" of sound element, which lowered the influence of reflection and improved the resolution of sound.

Specification SR-009s

Specification SRM-700S

Type

All-stage FET configuration DC amplification driver unit

Frequency response

DC – 100kHz (with one SR-009S)

Gain

60dB

Harmonic distortion

0.01% or less (1kHz/100Vrms output)

Input impedance

50kΩ (RCA), 50kΩx 2 (XLR)

Maximum output voltage

450Vrms (1kHz)

Bias voltage

PRO 580V

Operating temperature / humidity

0 to 35 degrees C / less than 90% (non condensing)

Input terminal

RCA x 1, XLR x 1

Output

RCA parallel output terminal

Power consumption

46W

Dimension

240W x 103 H x 393 D mm (maximum protruding portion included)

Weight

6.3kg

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