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HEDD Audio HEDDphone D1 Open-Back Headphones (Open Box) [Grade A, Full Warranty]
WIRED HEADPHONE
Open-Back
over-ear
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✓ 2 year limited HEDD warranty
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↓ Details provided by HEDD ↓
(Specifications and appearance of this product are subject to change without notice)
The first of its kind. Precision without compromise.
A new HEDDphone® built for true listening, the D1 delivers the clarity, realism, and tonal integrity of a reference monitor. Every note feels balanced and immediate, details are revealed without fatigue, and the carefully engineered fit ensures lasting comfort for extended sessions.
The D1 is the world’s first dynamic headphone with a Thin-Ply Carbon Diaphragm (TPCD). Developed with Swedish company Composite Sound, specialists in advanced audio diaphragms, the D1 combines HEDD’s 40 years of acoustic expertise with advanced material science.
Built with precision, purpose, and material integrity, the HEDDphone® D1 delivers reference-grade accuracy and balance. Made for those who are serious about sound.
Key features
Thin-Ply Carbon Diaphragm
At the heart of the D1 lies a diaphragm made from Thin-Ply Carbon, an advanced composite used in extreme applications from Formula 1 cars to NASA’s Mars helicopter Ingenuity. In headphone design, it becomes something entirely new: TPCD eliminates the need for traditional damping at the diaphragm level, enabling faster, cleaner and more accurate performance.
Custom Dynamic Driver
Universal Performance
Designed and made in Berlin
Mark Sparrow
— Consumer Tech @ Forbes
HEDDphone® D1 Measurements
The following graph shows the frequency response for the HEDDphone® D1 using two different simulators.
The Sound of the HEDDphone® D1
Clarity and Balance
The D1’s TPCD driver delivers a new level of sonic clarity and tonal accuracy, revealing detail and realism that are rare among dynamic headphones. It bridges the intimacy of headphone listening with the precision of studio monitors.
Comfort and Immersion
Thanks to the diaphragm’s low mass and compact architecture, the driver remains light and responsive, enabling long, fatigue-free sessions and a natural sense of immersion.
Compatibility and Scalability
With 32 Ω impedance and 100 dB sensitivity, the D1 connects easily to most playback devices, while its performance scales gracefully with premium amplification.
Features
- Thin-Ply Carbon Diaphragm engineered for structural resonance control
- Ultra-fast and clean transients
- Custom dynamic driver tuned for precision, speed, and tonal balance
- Open-back circumaural design delivers natural openness and spacious soundstage
- Broad source compatibility, scales with premium amps
- Lightweight and comfortable, perfect for extended listening sessions
- Includes dual 3.5 mm mono connectors; 6.35 mm adapter; and 2 premium textile-covered detachable cables
- Custom carry case
- Made in Germany
- 5 year warranty after registration
Specifications
-Design: Open-back over ear headphone
-Drivers: Dynamic with a Thin-ply Carbon Diaphragm
-Frequency Range: 5Hz-40Hz
-Maximum SPL: 100dB at 1mW
-Impedance: Open-back over ear headphone
-Design: 32 Ω
-Pads: Perforated Velour
-Cable: Textile-covered premium cable
-Inputs: 2 x 3.5mm
-Weight: 350g
Open Boxes at Audio46
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- "What is the condition?" It's going to be like-new "Grade A", complete set, with no signs of wear unless the title mentions otherwise
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- "What is its history?" Open Box units could be: a customer return, a review unit, or store demo that has less than 5 hours of use
Our expert team tests and verifies every item to ensure it meets or exceeds your expectations, and with free shipping and 30 day returns, purchasing open box audio gear from us is a risk-free way to save. Try Audio46 today and experience the difference.
