• Amazing Condition
• Original Box and Packing

 Above fifty five years ago (1959), Stax became the first company in the world to develop and manufacture Electrostatic Headphones. Today, our experience is making a dramatic difference  that you can enjoy. For example, Daimler-Benz was so taken with "Stax technology" that they requested  a special earspeaker to test the acoustic environment in their limousines. This earspeaker became well-known as the SR-Λ Professional. Now, the SR-Λ Signature is the successor to the SR-Λ Professional. It is constructed of select materials and is hand assembled to meet the superlative standard of Mr. Naotake Hayashi, the president and founder of Stax.

Stax is proud to have created a new reference standard for earspeakers that obtains an even higher level of performance than the SR-Λ Professional. The Signature series SR-Λ uses a transducing diaphragm made of high-polymer that is only "one" micron thick. The signal cord is made of PC-OCC cable that is specially cast from pure copper to preserve phase integrity through large linear crystalline structure.

The SR-Λ Signature  is designed to operate at 580 V D.C. bias.it can be used with any Stax professional adaptor or direct drive amplifier. The SRD-7/Mk2 and the SRD-7sb/Mk2 are adaptors that enable the SR-Λ Signature and normal-bias earspeakers to work in conjunction with any high quality amplifier or receiver. The SRD-7/Professional is an adapter that enables two SR-Λ Signature  earspeaker (or two other pro-bias earspeakers) simultaneously to work in conjunction with a high quality amplifier or receiver. The SRD-X/Pro and the SRD-P are portable adaptors.  They allow the use of the SR-Λ Signature  in remote locations. The SRM-1/Mk2 Pro is a Class-A DC direct drive amplifier for any Stax earspeaker. The SRM-T1 is a Hybrid FET/vacuum tube direct drive amplifier that is Specifically designed to highlight the SR-Λ Signature . It also will drive any Stax earspeakers.

Specifications

Type:  Push-pull Electrostatic Oval Shape Units. Open back Enclosure

Frequency Response:  7 - 41,000 Hz

Electrostatic Capacity:  122 pF (including cord)

Impedance:  129 k Ω / 10 kHz

Sensitivity:  101 dB / 100 V RMS (input/ 1 kHz)

Maximum Output Sound level:  118 dB / 400 Hz

Bias Voltage:  580 V D.C. (standard)

Indication of Left/Right Channel:  Left [L]and Right [R] indicated at headband slides, and a solid line [L] & a broken line [R] on the cable

Ear Pads:   High quality soft vinyl leather

Cord:  6-core parallel low capacity wire/ full length 2,5 m [PC-OCC Continuous Crystal Copper]

Weight:  450 g (322 g without cord)