{"product_id":"stax-sr-009d-electrostatic-headphones-open-box","title":"STAX SR-009D Electrostatic Headphones (Open Box)","description":"\u003ch2\u003eNEW MODEL with detachable cable\u003c\/h2\u003e\n\u003cp\u003eThe SR-009, the origin of STAX's current high-end models. Equipped with a large circular sound unit featuring innovative fixed electrodes, this model led the high-end headphone culture for a long time. Production had ceased with the arrival of the new flagship model, but now, in response to numerous requests from fans worldwide, it is making a comeback. With changes to the body color, cable material, and unit case, it is now available at a more accessible price than at its original launch.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eMLER (Multi-Layer Electrode)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe SR-009 (released in 2011) was the catalyst for the current high-end models SR-X9000 and SR-009S. The key technology for high-end models, MLER (Multi-Layer Electrode), originated with this model. Using thermal diffusion bonding technology, which unifies photo-etched metal plates at the atomic level under vacuum conditions, this new fixed electrode achieves exceptional planarity, low resonance, and high sound wave transmission. The SR-009D remains the most affordable option for experiencing the sound of current STAX high-end models.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eReplaceable Cable Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eSR-009D adopts the replaceable cable structure, which is now standard across the current lineup. This enhances the usability of the earspeakers by enabling future compatibility with high-quality cables and easy maintenance in case of unexpected cable breakage.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/SR-009D_print_resize.jpg?v=1765296149\" alt=\"Hero shot\"\u003e\u003c\/p\u003e\n\u003ch3\u003eMLER, Fixed electrode formed by unifying three stainless steel plates without any adhesive\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/SR-009D_MLER.jpg?v=1765296390\" alt=\"Fixed electrode\"\u003e\u003c\/p\u003e\n\u003ch3\u003eNewly developed injection-molded unit case for weight reduction\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/SR-009D_unit.jpg?v=1765296487\" alt=\"Newly developed injection-molded\"\u003e\u003c\/p\u003e\n\u003ch3\u003eRedesigned with detachable replaceable cable structure for improved maintainability\u003c\/h3\u003e\n\u003cp\u003e\u003cimg alt=\"Detachable replaceable cable structure\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/SR_009D_re_cable.jpg?v=1765296561\"\u003e\u003c\/p\u003e\n\u003ch3\u003eHeadpad features a 10-step click mechanism for fitting a wide range of head shapes\u003c\/h3\u003e\n\u003cp\u003e\u003cimg alt=\"The headband has a 10-step click mechanism\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/SR-009D_arc.jpg?v=1765296629\"\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSPECIFICATIONS\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eType: push-pull electrostatic sound element, open-air type enclosure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSound element shape: large round shape\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFrequency response: 5 - 42,000Hz\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eElectrostatic capacitance: 110pF\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eImpedance: 145k\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSound pressure sensitivity: 101dB\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBias voltage: 580V DC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAttached cable conductor: OFC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCable: parallel 6-strand, low-capacity wide cable\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCable length:2.5m\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEar pad: genuine sheep leather (skin touching portion), artificial leather (surrounding portion)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWeight: 452g (ear speaker)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSpecifications and appearance are subject to change for improvement.\u003c\/p\u003e","brand":"STAX","offers":[{"title":"Default Title","offer_id":50956858392809,"sku":"SR-009D (OB)","price":2601.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0065\/4432\/6771\/files\/SR-009D_Main.png?v=1765297266","url":"https:\/\/audio46.com\/products\/stax-sr-009d-electrostatic-headphones-open-box","provider":"Audio46 Headphone Store","version":"1.0","type":"link"}