HEDD Audio, the Berlin-based studio monitor specialist, has introduced the HEDDphone D1, a groundbreaking open-back over-ear headphone that marks a significant advancement in dynamic driver technology. Priced at 699 EUR, the D1 is the world’s first dynamic headphone to feature a Thin-Ply Carbon Diaphragm (TPCD), developed in collaboration with Swedish audio materials expert Composite Sound.
Drawing on four decades of acoustic engineering experience, HEDD Audio has engineered the D1 to deliver reference-grade clarity, tonal balance, and fatigue-free listening. The headphone combines ultra-fast transients with a natural, spacious soundstage, positioning it as a serious tool for audiophiles and professionals seeking uncompromised accuracy.
Breakthrough Diaphragm Technology
At the core of the D1 is the custom dynamic driver with its Thin-Ply Carbon Diaphragm. This advanced material, known for its exceptional stiffness-to-weight ratio, enables precise structural resonance control. The result is clean, immediate transient response and detailed reproduction across the audible spectrum without harshness or listener fatigue.
The open-back circumaural design further enhances the DEDDphone D1’s performance by providing a wide, natural soundstage reminiscent of high-end studio monitors. With a frequency response extending from 5 Hz to 40 kHz and a maximum SPL of 100 dB at 1 mW, the D1 reveals subtle nuances while maintaining tonal integrity at any volume.
Premium Build and Comfort
Weighing just 350 grams, the D1 prioritizes long-term comfort with perforated velour earpads and a lightweight yet robust chassis. Each unit is designed and assembled in Berlin, reflecting HEDD’s commitment to German craftsmanship.
The headphone ships with two premium textile-covered detachable cables, dual 3.5 mm mono connectors, a 6.35 mm adapter, and a custom carry case. A 32 Ω impedance ensures broad compatibility with portable players, desktop DACs, and high-end headphone amplifiers—scaling seamlessly with upstream components.
Availability and Warranty
The HEDDphone D1 is available now directly from hedd.audio with free shipping, 30-day returns, and a 5-year warranty upon registration. 0% financing is offered via PayPal Credit.
