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HEDD HEDDphone D1

$699.00

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HEDD Audio HEDDphone D1

The HEDD Audio HEDDphone D1 is the world’s first dynamic headphone built around a Thin-Ply Carbon Diaphragm (TPCD), developed in collaboration with Composite Sound — Swedish specialists in advanced audio diaphragms whose material has found application in Formula 1 engineering and NASA’s Mars helicopter Ingenuity. TPCD eliminates the need for traditional diaphragm-level damping, enabling faster, cleaner transient response and reference-grade tonal accuracy in an open-back circumaural design that extends frequency response from 5 Hz to 40 kHz. Drawing on HEDD’s four decades of acoustic engineering expertise, the D1’s custom dynamic driver is tuned for precision, tonal balance, and extended listening without fatigue, with a 32 Ω impedance that performs consistently from portable sources and scales with dedicated amplification. Made in Germany and backed by a 5-year warranty, the HEDDphone D1 brings advanced material science and acoustic craftsmanship together for those who listen with intention.

Key Features

  • Thin-Ply Carbon Diaphragm (TPCD): An advanced composite diaphragm that eliminates the need for traditional damping at the driver level, enabling faster transient response, lower distortion, and more accurate reproduction across the full frequency range — a first in dynamic headphone design.
  • Custom Dynamic Driver: Engineered in collaboration with Composite Sound and informed by HEDD’s four decades of loudspeaker R&D, the D1’s driver delivers studio-grade precision for personal listening — detailed, balanced, and free of the fatigue common in conventional dynamic designs.
  • Open-Back Circumaural Design: The open-back acoustic architecture produces a natural, spacious soundstage suited to critical listening, mixing, and mastering where imaging and spatial accuracy are essential.
  • Broad Source Compatibility: At 32 Ω impedance and 100 dB sensitivity, the HEDDphone D1 performs consistently across portable players and desktop interfaces, and scales gracefully with higher-end amplification while maintaining control and tonal balance.
  • Lightweight, Extended-Wear Comfort: At 0.77 lbs, the HEDDphone D1 is engineered for extended sessions, with perforated velour ear pads and a carefully considered fit that reduces listening fatigue over time.
  • Premium Cable and Accessories: Includes a 2m textile-covered detachable cable with dual 3.5mm mono connectors, a 6.35mm adapter, and a custom carry case.
  • Made in Germany: Each HEDDphone D1 is designed and assembled in Berlin with premium components and backed by a 5-year warranty after registration.

Specifications

  • Type: Open-back over-ear headphone
  • Driver: Dynamic with Thin-Ply Carbon Diaphragm (TPCD)
  • Frequency Range: 5 Hz – 40 kHz
  • Sensitivity: 100 dB at 1 mW
  • Impedance: 32 Ω
  • Ear Pads: Perforated velour
  • Connections: 2 × 3.5mm mono (dual-entry)
  • Cable: Textile-covered TRS 3.5mm, 2m; includes 6.35mm adapter
  • Weight: 0.77 lbs
  • Warranty: 5 years after registration
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WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. 
For more information go to www.P65Warnings.ca.gov.

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