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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.

Specifications: SRM-323S Driver unit ---Export version
1.Frequency response: DC- 60 kHz (SR-307, when using one unit)
2.Rated input level: 100 mV with 100V output
3.Maximum input level 30 V r.m.s. with volume at minimum setting
4.Amplification: 60 dB (x1000)
5.Total harmonic distortion max. 0.01% (1 kHz / during 100 V r.m.s. output)
6.Input impedance 50 ko (RCA)
7.Maximum output voltage: 400 V r.m.s. / 1 kHz
8.Standard bias voltage DC580 V (PRO bias)
9.Power voltage AC120V-240V +- 10%, 50 to 60 Hz. (Adjusted for your area)
10.Power consumption 30 W
11.Temperature range for use Between 0 and 35C, max. 90% (no condensation)
12.External dimensions 150 (W) x 100 (H) x 360 (D) mm (including knobs and terminals)
13.Weight 2.9 Kg
Specifications and external appearance may be changed without notice in order to improve performance.

Specifications: SR-307 (Classic) Headphone
1.Type Push-pull electrostatic earspeaker
2.Frequency Range 7-41,000Hz
3.Capacitance, including cable 120pF
4.Sound Pressure Level 101dB/100V r.m.s.
5.Cable / color 2.5 m, PC-OCC, low-capacitance cable / gray
6.Earpad Highly permeable high-quality synthetic leather
7.Weight including cable 490g without cable 340g
8.Channel Identification: Displayed on the headband arc section; Left: Solid line on cable; Right: Dotted line on cable.
9.Operating temperature and humidity Between 0 and 35C, max. 90% (no condensation)
Specifications are subject to change without notice.

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