HEDDphone® D1 - 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.

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 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)