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