{"product_id":"stax-sr-x9000-earspeakers","title":"STAX SR-X9000 Earspeakers","description":"\u003ch1\u003e\u003cstrong\u003eUltra-thin diaphragm with four-layer electrodes\u003c\/strong\u003e\u003c\/h1\u003e\n\u003cp\u003eThe STAX SR-X9000 combines MLER-3 four-layer fixed electrodes, an ultra-thin diaphragm, and machined aluminum housings in an open-back electrostatic headphone. Its diaphragm has 20% more surface area than the SR-009S, supporting a spacious presentation with fast transient response. A stainless steel headband, leather contact surfaces, and two interchangeable cables accommodate extended listening.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFour layers for greater electrode stability\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe SR-X9000’s MLER-3 fixed electrodes combine metal mesh and etched electrodes in a four-layer structure joined through thermal diffusion bonding. Metal mesh allows sound to pass through with less air resistance and reflection, while the bonded structure provides the rigidity needed to control resonance. This construction builds on STAX’s decades of research into mesh electrodes.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eA larger diaphragm with very little moving mass\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eMade from ultra-thin engineering plastic film, the diaphragm responds quickly to changes in the audio signal. Its surface area is 20% larger than that of the SR-009S, helping create a broad soundstage. The low moving mass supports responsive transients and linear reproduction across the frequency range.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eMachined aluminum to control vibration\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe aluminum enclosure holds the sound unit securely and reduces unwanted vibration. Its internal acoustic design also limits the influence of reflected sound, helping preserve clarity as sound travels from the driver to your ears.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eA stable fit with nine-step adjustment\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe stainless steel headband assembly resists twisting and helps maintain a stable fit. A genuine leather head pad rests against your head, while a nine-step slider lets you adjust and retain your preferred position.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSoft sheepskin where the pads meet your skin\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe ear pads use genuine sheepskin on their contact surfaces, with artificial leather around the surrounding portions. The soft, breathable contact material supports a close fit and comfort during longer listening sessions.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTwo detachable cables for different listening distances\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe included cables combine a 6N high-purity copper core with silver-plated annealed copper conductors. Choose the 4.9 ft (1.5 m) cable for a nearby amplifier or the 8.2 ft (2.5 m) cable when you need more reach. Both use a parallel six-strand, low-capacitance construction.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003ePaulownia wood storage case\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eA paulownia wood case provides a dedicated place to store the SR-X9000 between listening sessions. The wood’s low thermal conductivity and moisture-regulating properties make it well suited to headphone storage.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eProduct highlights\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOpen-back, push-pull electrostatic design\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMLER-3 four-layer fixed electrodes\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUltra-thin diaphragm with 20% more surface area than the SR-009S\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMachined aluminum sound-unit enclosures\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eAngled guard mesh to manage reflections\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eStainless steel headband with nine-step adjustment\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eGenuine sheepskin ear pad contact surfaces\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTwo detachable cables included\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePaulownia wood storage case\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 headphones with open-air enclosure\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSound element shape: Large circular\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFixed electrodes: MLER-3 multilayer electrodes\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFrequency response: 5–42,000 Hz\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eElectrostatic capacitance: 110 pF\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eImpedance: 145 kΩ\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSound pressure sensitivity: 100 dB\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBias voltage: 580 V DC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCable conductors: 6N (99.9999%) OFC and silver-plated annealed copper\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 lengths: 8.2 ft (2.5 m) and 4.9 ft (1.5 m)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eEar pads: Genuine sheepskin contact surfaces with artificial leather surrounding portions\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: 15.2 oz (432 g), headphones only\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-X9000 electrostatic headphones\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e8.2 ft (2.5 m) detachable cable\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e4.9 ft (1.5 m) detachable cable\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePaulownia wood storage case\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"STAX","offers":[{"title":"Default Title","offer_id":67936082657516,"sku":"APS-1471-1","price":6200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0225\/2721\/3642\/files\/SR-X9000_main.jpg?v=1793042478","url":"https:\/\/apos.audio\/products\/stax-sr-x9000-earspeakers","provider":"Apos","version":"1.0","type":"link"}