Stax SRS-2020 Brochure

electrostatic audio products

SRS-2020

Basic System II
(SR-202 Basic + SRM-212)

The SR series Earspeaker is the fruit of the most
up-to-date technology and 40-year's experience of
STAX that first developed and manufactured the
electrostatic headphone, that is the first
"Earspeaker", in the world.
Differently from ordinary headphones, this
Earspeaker is equipped with neither magnet nor
coil, but utilizes electrostatic force to generate
sophisticated sound.
In detail, the core of an Earspeaker is composed
of a thin diaphragm (oscillatory film) to which a DC
voltage of 580V is supplied.
When audio signal is supplied to the electrodes,
electrostatic force generates and drives the dia­phragm to reproduce the sound.
Thanks to this operation principle, the Earspeaker
reproduces sound very naturally and delicately in
all nuances.

FEATURES

SR-202 Basic Headphone

■Diaphragm reduced in thickness

For the first time in the long history of Electrostatic Earspeaker Stax
have incorporated a super thin diaphragm in the Stax SR-202 Basic,
the most basic electrostatic Earspeaker in the Stax range.
The significant improvement in sound quality has only been made
possible by this revolutionary new diaphragm material.

SPECIFICATIONS

■ Type : Electrostatic Open back Push-pull driving

■ Frequency Range : 7～41,000Hz

■ Capacitance : 120pF (including cable)

■ Sensitivity : 100dB / 100V r.m.s. Input / 1kHz

■ Standard Bias Voltage : PRO 580V/DC

■ Cable : Low Capacitance Oxygen-Free Copper

■ Earpad : High quality artificial Leather

■ Weight : 440g (including cable)

: 295g (without cable)

■Specifications and design are subject to change without notice for

improvements.

cable

SRM-212 Driver Unit

■Compact yet powerful

The SRM-212 offers a low impedance driver unit utilizing a newly developed emitter
follower stage in a compact format that operates in 12V DC yet delivers distortion­free power. An AC adaptor is also supplied.

●High tech and hand crafted construction

●Compatible with modern audio/video systems and electronic musical instruments

●Easy to operate

●Compact size

●Designed to be reliable

●Gold plated input terminals

●Sophisticated direct drive Class-A DC circuit topology

●High quality DC power supply included

●Pro bias (580V DC) circuitry installed

■ Type : Solid-State Class-A DC Direct Driver Unit for

Earspeakers

■ Gain : 60dB

■ Maximum Output Voltage : 280V r.m.s.

■ Harmonic Distortion : Less than 0.01%, 1kHz

■ Input Sensitivity / Impedance : 100mV/100V Output, /50K ohms

■ Frequency Range : DC～20,000Hz

■ Bias Voltage : PRO 580V

■ Power Consumption : 4W / DC12V

■ Power Supply : AC Adaptor 117, 220, 240V, 50/60Hz

■ Weight : 0.5kgs (without AC Adaptor)

■ Dimensions : 132(W)×38(H)×132(D)mm

■ Operating Temperature : 0～40 ℃

STAX LIMITED

293-1 Fujikubo, Miyoshi-cho, Iruma-gun, Saitama Prefecture Japan 354-0041

Copyright (C)1999 STAX Ltd. All rights reserved.

Tel :[phone] Home Page :http://www.stax.co.jp
Fax :[phone] E-mail :[e-mail]