HEDD Audio HEDDphone D1 Open-Back Headphones

SKU:
D1
$1,129.00
Display headset
On Display at Bay Bloor Radio.

Try before you buy! Over 100 headphones and earphones to choose from in-store. See the Store.

Message bubble
Personal attention, expert advice.

Message Us Call (416) 967-1122

Description

HEDDphone® D1
 
 
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. 
 
 
  • 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 1 premium textile-covered detachable cables
  • Custom carry case
  • Made in Germany
  • 5 year warranty after registration (2 years standard)
 
 
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
Dynamic headphones have long balanced compromises such as speed versus stability or weight versus comfort. Drawing on four decades of R&D experience, and the expertise of Composite Sound, HEDD has engineered the core of the D1 driver to deliver studio-grade precision for personal listening. The result is sound that is detailed, balanced, and fatigue-free.
 
 
Universal Performance
With 32 Ω impedance and 100 dB sensitivity, the D1 performs consistently across sources from portable players to dedicated amplifiers. It also scales gracefully with higher-end systems while maintaining control and balance. 
 
 
Designed and made in Berlin
All HEDD products are designed and assembled in Berlin by talented engineers and craftspeople who draw from a rich history in audio reproduction to create products tuned to the key of you.
 
 
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.

 

Frequently Asked Questions

What makes the HEDDphone® D1 suitable for professional listening?

The HEDDphone® D1 is designed with audiophiles and professionals in mind. Its dynamic driver with a Thin‑Ply Carbon Diaphragm (TPCD) offers unparalleled clarity and tonal integrity, making it ideal for studio-grade precision and fatigue-free listening. The open-back design ensures natural spaciousness, while the lightweight build and perforated velour ear pads provide comfort during extended sessions.

How does the Thin‑Ply Carbon Diaphragm (TPCD) enhance sound quality in the HEDDphone® D1?

The TPCD technology, co-developed with Composite Sound in Sweden, utilizes ultra-thin carbon layers to control resonances structurally. This innovation eliminates the need for traditional damping, allowing the diaphragm to move faster and more cleanly, resulting in a more detailed and accurate sound reproduction.

What are the care instructions for maintaining the HEDDphone® D1?

To maintain your HEDDphone® D1, store it in the custom carry case provided when not in use. Clean the perforated velour ear pads gently with a soft, dry cloth to remove any dust or debris. Ensure that the detachable cables are handled with care to prevent damage. Regularly check for any loose components, as the headphones are fully serviceable.

Is the HEDDphone® D1 compatible with standard audio equipment?

Yes, the HEDDphone® D1 is broadly compatible with most audio equipment due to its moderate impedance of 32 Ω and sensitivity of 100 dB. It performs well with common sources and scales with premium amplification, making it versatile for various audio setups.

What sustainability features does the HEDDphone® D1 offer?

The HEDDphone® D1 is designed with longevity in mind, featuring fully serviceable components that extend its lifespan. This approach reduces waste and promotes sustainability. Additionally, the TPCD diaphragm is manufactured in Sweden, ensuring high-quality, environmentally-conscious production standards

 


Specifications

Design
Open-back over-ear headphone

 

Drivers
Dynamic with a Thin-ply Carbon Diaphragm

 

Frequency Range
5 Hz - 40 kHz

 

Maximum SPL
100dB at 1mW

 

Impedance
32 Ω

 

Pads
Perforated Velour

 

Cable
Textile-covered premium cable

 

Inputs
2 x 3.5mm

 

Weight
350g (net)

For hygienic reasons, there are no returns on headphones once opened.

All in stock headphones are available for personal demonstration in-store. We encourage you to try before buying to ensure satisfactory sound, fit, and functionality.

If an item is defective upon receipt, please notify us within 30 days of purchase so we can arrange an exchange. For issues following 30 days, we will work with you and the manufacturer within the scope of each brand’s warranty and service policies.

Specs

Dimensions

About HEDD Audio

Warranty

HEDD Audio products include a standard 2-year manufacturer's warranty. By filling in the registration form with HEDD, you can qualify for an additional 3 years of warranty, for a total of 5 years. Visit https://hedd.audio/pages/product-registration for more information.

You May Also Like

Browse these similar products.

Card Icon

Personal Attention, Expert Advice

We’re here to answer your questions and help you make the right choice.

Card Icon

Service Department

Our advisers and technicians are standing by to assist after your purchase.

Card Icon

Since 1946

Family owned and operated. Buy with confidence from a store you can trust.

KEF Coda W in vintage burgundy

Sign up to win!

Celebrating the 60th Anniversary of Technics.

Subscribe to the BBR newsletter and you’ll be entered in a draw to win Technics EAH-AZ100, the true wireless earbuds with Magnetic Fluid Drivers, Adaptive Noise Cancelling, and Voice Focus AI for clear music and calls.

Be the first to know about new arrivals, promotions, special events, and more: