{"product_id":"fostex-th-909-open-back-headphones","title":"Fostex TH-909 Open-Back Headphones","description":"The Fostex TH-909 open-back reference headphones feature 50mm Biodyna bio-cellulose drivers, a 1.5 Tesla magnetic circuit, 25-ohm impedance, 100dB sensitivity, and a 5Hz to 45kHz frequency response. These flagship open-back cans elevate high-resolution systems by projecting an expansive, three-dimensional acoustic soundstage. Built with Japanese Cherry Birch earcups finished in traditional Bordeaux Urushi lacquer, the housing incorporates dual-layer metal grilles to damp unwanted resonance while allowing air to flow freely. A detachable 7N-grade oxygen-free copper cable ensures pristine, low-loss signal transmission across all source components.\n\nCritical consensus praises the TH-909 for blending the visceral, authoritative bass impact of closed-back models with extraordinary spatial openness and detail resolution. Reviewers across major head-fi outlets highlight its sweet midrange, fatigue-free treble, and fast transient response across dense musical passages. Widely celebrated in audiophile circles, it consistently earns high praise for merging traditional Japanese lacquerwork with reference-grade acoustic design.\n\nIntegrating this headphone into your setup transforms daily listening into an immersive, studio-grade musical experience. Its effortless resolution and organic tonal balance allow subtle nuances to emerge with captivating realism and dynamic weight. For the dedicated enthusiast, it represents a definitive centerpiece for deep, uncompromised audio enjoyment.","brand":"Fostex","offers":[{"title":"Default Title","offer_id":67739085766937,"sku":"101095","price":1099.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/4225\/1545\/files\/101095-9.jpg?v=1791606133","url":"https:\/\/tmraudio.com\/products\/fostex-th-909-open-back-headphones","provider":"The Music Room","version":"1.0","type":"link"}