The God of beauty lodges in subtle signals. Drawing forth the latent performance of devices to achieve the ultimate in sound quality is one of the pleasures experienced by audiophiles. The attraction of high-end devices in particular perhaps lies in the scale of the expectations that they hold. For example, an important topic is the reproduction of three-dimensional information that recreates the width and height of space. The task is how to recreate in a full and detailed manner the complete tonal expanse and sound that escapes upwards. Because this information is extremely subtle and detailed, there is a need for a particularly light and high-speed diaphragm. A large output amplifier with a large-diameter woofer and a large power section might also be imagined for the reproduction of deep and low sounds. The electrostatic audio pursued by STAX employs an almost ideal method of reproduction involving the total full-range drive by means of static electricity voltage changes using a high-polymer film diaphragm only a few microns thick that realizes the ultimate in lightness. Subtle changes in the music are converted into air vibrations with no loss and no addition of distortion. It takes over the features of a reference monitor device during recording and disc production. Containing a large, high-speed, large-capacity power transformer, it depicts the texture and tone of musical instruments in a powerful manner and has the capacity to recreate passages of low sounds dynamically without falling into heaviness. Through the use of a simple new circuit configuration and high sound quality parts also considerate to the environment, the STAX electrostatic earspeaker drive unit SRM-323II achieves an even more natural spatial reproduction capacity. The sound quality is indisputably at the top end of the scale.? Features Significantly strengthened power transformer. An enormous expansion in dynamic range has been achieved by increasing speed and dynamic range. An emitter follower is used at the output stage to achieve low impedance. A major expansion of dynamic range in the upper frequency has been achieved. A high sound quality, low noise FET is used at the input stage, forming a simple two-stage amplification circuit. A natural, pure sound quality with a large quantity of information has been realized. In the case of the electrostatic type, the structure itself is balance operated. A balance circuit is formed up to the moment of conversion into air vibrations. This is the only system that makes it possible to enjoy the sound that characterizes the balance system. Solid state DC amplifier configuration not using a coupling condenser. Amplification is set at a low level, thereby making it easier to make subtle adjustment in volume when using a high-output CD player, etc. Volume is the only control function, and there is no input selector. This is a configuration with the emphasis on purity. In order to avoid magnetic distortion, the chassis is made of aluminum, thereby contributing to purity of sound. The unit is fitted with parallel out terminals (RCA) that allow the signals to pass through. Careful selection of parts with high consideration on sound quality, performance, and the environment. Earspeakers of PRO bias (5-pin) type can be used. A new panel face has been designed with rounded corners and a silver brushed finish.   Frequency response DC~60kHz (with 1x SR-303) Rated input level 200 mV / 100V output Maximum input level 30 V r.m.s. at minimum volume Amplification: 54 dB (x500) Total harmonic distortion  0.01% / 1 KHz, 100 V r.m.s. output Input impedance 50KΩ RCA Maximum output voltage: 400 V r.m.s. / 1 kHz Standard bias voltage PRO DC580V x2 Power voltage AC100V, 50/60Hz Power consumption 29 W Temperature range for use Between 0-35 degrees, max. 90% (no condensation) Dimensions 150x100x360mm Weight 2.9 Kg Total weight in box 4.5kg

Japan Made. Highest manufacturing standard Compatible Earspeakers: sr-007, 404, 303, 202, 003 Contents .. SRM-323A Driver Unit powered on AC100V 29W. We sell Voltage Converter with input plugs North America, or Europe, UK. Japanese Manual with adequate diagrams. Supplied by Authorized Resellers in Japan with standard manufacturer's warranty. Manufacturer's Japan Warranty 1 year labor/parts from the day you receive. We can help you liaise with the Japan repair centre. You will pay for postage to/from our Japan office.   323A or 323II? srm-323A is the Japan version, running on Japan's AC100v. srm-323II is the International version, and runs on ac120~240v. We dont have this version.   Buy Stax Accessories HPS-2 Wood Headphone Stand CPC-1 Clear Plastic Cover SRE Pro Extension Cable