HEDD - HEDDphone D1 The world’s first Thin-Ply Carbon Diaphragm headphone. First imagined eight years ago, the idea of bringing Thin-Ply Carbon into headphone design has now been realized through extensive development and refinement. The D1 embodies HEDD’s decade of innovation and the forty-year acoustic legacy of its founder, Klaus Heinz. Developed in collaboration with Composite Sound of Sweden—specialists in advanced diaphragm design and manufacturing—the outcome is a headphone that redefines the very idea of what a dynamic driver can achieve. What is TPCD? Thin-Ply Carbon (TPC) is not ordinary carbon fiber. Composed of ultra-thin layers of carbon precisely aligned and bonded, it is prized for its exceptional stiffness-to-density ratio, low mass, and resilience. As such, it has become the material of choice for extreme performance demands—from the chassis of Formula 1 cars to NASA’s Mars helicopter, Ingenuity. In the D1, TPC becomes something entirely new: Thin-Ply Carbon Diaphragm (TPCD). This precisely engineered diaphragm controls resonances on a structural basis, eliminating the need for traditional damping materials at the diaphragm level, and allowing faster, cleaner, and more accurate motion across the audible spectrum. Key Features * World’s First TPCD Headphone – a diaphragm made from Thin-Ply Carbon (TPC), a material proven in extreme applications from Formula 1 to NASA’s Mars Helicopter Ingenuity. * Studio Precision for Personal Listening – delivers fast transients, stable imaging, and tonal integrity. * Co-developed with Composite Sound (Sweden) – specialists in ultra-light, high stiffness carbon technology. * German Engineering + 40 Years Legacy – Klaus Heinz’s acoustic design heritage, reimagined for headphones. * Built to Last – made in Germany, fully serviceable, and backed by a 5-year warranty. * Thin-Ply Carbon Diaphragm (TPCD): engineered for structural resonance control, delivering ultra-fast and clean transients. * Custom Dynamic Driver: co-developed with Composite Sound (Sweden) for precision, speed, and tonal balance. * Open-back Circumaural Design: natural openness and spacious soundstage. * Universal Performance: 32 Ω impedance / 100 dB sensitivity – broad source compatibility, scales with premium amps. * Lightweight & Comfortable: 350 g for extended listening sessions. * Connectivity & Accessories: dual 3.5 mm mono connectors, 2 premium textile-covered detachable cables, 6.35 mm adapter, custom carry case.
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