HEDD Audio HEDDphone ONE

The HEDD Audio HEDDphone ONE brings the Air Motion Transformer driver — a technology HEDD has refined through years of professional studio monitor design — into a full-range, open-back headphone built for critical listening. Released in 2020 and assembled by hand in Berlin, the HEDDphone ONE uses HEDD’s Variable Velocity Transformation (VVT) geometry to achieve even frequency response from 10 Hz to 40 kHz, making it the world’s first full-range AMT headphone. Its open-back architecture produces an expansive soundstage and honest, uncolored reproduction that has earned recognition from Sound on Sound and adoption by professional engineers across genres. Providence Sound And Vision stocks the HEDDphone ONE in Los Angeles for musicians, producers, and studio professionals seeking reference-grade headphone accuracy.

Key Features

• Full-Range AMT Driver: HEDD’s Air Motion Transformer delivers extended high-frequency response, exceptional transient accuracy, and a naturally open sound not typically achievable with conventional dynamic or planar magnetic drivers.
• Variable Velocity Transformation (VVT): A HEDD innovation that rethinks AMT driver geometry — varying fold width and depth across the diaphragm — to achieve even, flat response across the full audio spectrum from 10 Hz to 40 kHz.
• Open-Back Design: The open-back acoustic architecture produces an expansive, natural soundstage suited to mixing, mastering, and critical listening where spatial accuracy is essential.
• Handmade in Berlin: Each HEDDphone ONE is designed and assembled in Berlin by HEDD engineers and craftspeople drawing from decades of professional audio heritage.
• Premium Vegan Ear Pads: Soft, durable vegan materials provide extended wearing comfort for long sessions.
• High-Quality, Long-Life Construction: Built with durable components selected for extended product life and consistent performance under professional use.

Specifications

• Type: Open-back over-ear headphone
• Driver: AMT with full-range VVT technology
• Frequency Range: 10 Hz – 40 kHz
• Power: Min. 200 mW, recommended ≥1000 mW
• Weight: 1.6 lbs