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The HEDDphone® D1 offers the clarity, realism and sonic integrity of a reference monitor, and was designed for the pleasure of listening.
Every note sounds balanced and immediate, without causing listening fatigue. The carefully designed fit also ensures lasting comfort during longer listening sessions.
"The HEDD Audio HEDDphone D1 is one of my favorite mid-tier open-back dynamic driver headphones I’ve run into this year. It’s an enjoyable headphone that hits a nice midpoint between being a good headphone for the analytical ear while simultaneously maintaining an enjoyable musical temperament."
HEDD Audio HEDDphone D1 Review — Headfonics
"HEDD’s first TPCD headphone effort is nothing short of a triumph. Eight years of TCPD research have resulted in one of the most natural, fatigue-free dynamic headphones on the market. It’s not flashy or “fun” in the traditional audiophile sense, but it’s musically complete."
HEDD Audio HEDDphone D1 Review - Headfonia
"With the HEDDphone D1, HEDD Audio has scored a real coup. The D1 sets new standards in sound - even across categories, at a comparatively affordable price. I really didn't think there was so much more “HEDDroom” left for headphones, technically or sonically."
"HEDD Audio has a headphone on the horizon with the D1 that is sure to make waves. Featuring a new driver material, it impresses with breathtaking performance that sets a new standard in its price range. Highly recommended!"
At its heart is the world’s first Thin-Ply Carbon Diaphragm (TPCD) - a breakthrough that redefines what dynamic headphones can do.
The D1 began as an idea eight years ago and has been continually refined over the years. It is the result of four decades of acoustic expertise at HEDD, combined with the work of Composite Sound in Sweden, specialists in advanced audio diaphragms.
The D1 is built on precision, practicality and material integrity. It delivers reference accuracy and balance, making it perfect for anyone who takes sound seriously.
The D1 is the world's first headphone to feature a dynamic driver with a Thin-Ply-Carbon Diaphragm (TPCD). Developed in collaboration with Composite Sound (Sweden), it combines HEDD's 40 years of acoustic expertise with state-of-the-art materials science. The result is studio-quality clarity, balanced sound, and fatigue-free comfort. The D1 is made in Germany and comes with a 5-year warranty.
Dynamic headphones have always required compromises: speed versus stability, weight versus comfort.
Drawing on four decades of studio experience, HEDD has redesigned the heart of the driver.
The result is a design that offers studio-grade precision for personal listening: detailed, balanced, and fatigue-free.
Weighing 350 g, the D1 combines an ultra-lightweight diaphragm with a compact driver architecture, enabling hours of immersive, fatigue-free listening.
Every element was designed with stability, fit, and a naturally lightweight feel in mind.
With an impedance of 32 Ω and a sensitivity of 100 dB, the D1 delivers consistent performance across all sources – from portable players to dedicated amplifiers – and adapts easily to high-end systems without losing control or balance.
Every HEDDphone® D1 is made in Germany and is fully serviceable. This reflects HEDD's belief that high-quality headphones should last.
All components are designed for precision, durability, and reliability in everyday use.
