{"product_id":"stax-stax-sr-009d-earspeakers","title":"STAX SR-009D Earspeakers","description":"\u003ch1\u003e\u003cstrong\u003eLarge circular e-stat drivers with multi-layer electrodes\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003eThe STAX SR-009D brings back the large circular electrostatic driver and Multi-Layer Electrode technology introduced with the original SR-009. Updated body color, a revised sound unit case, and a detachable OFC cable accompany its return at a more accessible price than the original model’s launch price.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eThe return of a STAX reference\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReleased in 2011, the SR-009 introduced electrode technology that helped shape the SR-009S and SR-X9000. Following the end of its original production run, requests from listeners worldwide prompted its return as the SR-009D. This edition makes that foundational design available again, with changes to the body, cable material, and sound unit case.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eMulti-layer electrodes built for precision\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe SR-009D uses MLER, short for Multi-Layer Electrode, technology in its fixed electrodes. Photo-etched metal plates undergo thermal diffusion bonding under vacuum conditions, joining them at the atomic level. This process produces flat electrodes with low resonance and high sound wave transmission, allowing sound to pass through the electrode structure with minimal obstruction.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eLarge circular electrostatic drivers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eEach ear cup houses a large circular push-pull electrostatic sound element within an open-back enclosure. The SR-009D has a specified frequency response of 5Hz to 42kHz and operates with a 580V DC bias. It brings the original SR-009’s driver architecture to listeners seeking an entry into STAX’s current high-end range.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eA replaceable cable for easier maintenance\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe detachable cable structure makes replacement straightforward if the cable becomes damaged. It also allows you to fit compatible alternative cables. The supplied 8.2-foot (2.5m) cable uses oxygen-free copper conductors in a parallel six-strand, low-capacitance wide configuration.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSheepskin leather ear pads\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe ear pads use genuine sheepskin leather on the surfaces that touch your skin, with artificial leather around the surrounding portions. The earspeakers weigh approximately 15.9 ounces (452g).\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eProduct highlights\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLarge circular push-pull electrostatic sound elements\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMLER fixed electrodes derived from the original SR-009\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThermal diffusion bonding for electrode flatness, low resonance, and sound wave transmission\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOpen-back enclosure\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDetachable OFC cable for replacement and maintenance\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eGenuine sheepskin leather on ear pad contact surfaces\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e580V DC bias operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecs\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eType: Push-pull electrostatic sound element\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eEnclosure: Open-air\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSound element shape: Large circular\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFrequency response: 5Hz–42,000Hz\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eElectrostatic capacitance: 110pF\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eImpedance: 145kΩ\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSound pressure sensitivity: 101dB\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBias voltage: 580V DC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCable conductor: Oxygen-free copper (OFC)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCable construction: Parallel six-strand, low-capacitance wide cable\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCable connection: Detachable\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCable length: 8.2 feet (2.5m)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eEar pad contact surface: Genuine sheepskin leather\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eEar pad surrounding surface: Artificial leather\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eEarspeaker weight: 15.9 ounces (452g)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eWhat’s included\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSTAX SR-009D electrostatic headphones\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDetachable 8.2-foot (2.5m) OFC cable\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STAX","offers":[{"title":"Default Title","offer_id":67935775654124,"sku":"APS-1469-1","price":2890.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0225\/2721\/3642\/files\/SR-009D_Main.jpg?v=1793041684","url":"https:\/\/apos.audio\/products\/stax-stax-sr-009d-earspeakers","provider":"Apos","version":"1.0","type":"link"}