The HEDDphone One is the kind of headphone that makes you question everything you assumed was achievable from transducers sitting against your ears. As the world's first full-range Air Motion Transformer headphone, it delivers a presentation that's genuinely, almost unnerving in its openness — that accordion-fold AMT driver conjures a soundstage that simply doesn't feel like it lives inside your skull. Detail retrieval is forensic without being clinical, transients arrive with a snap and immediacy that few planar or dynamic drivers can touch, and the top-end extension clean to 40kHz gives the air around instruments a real, physical dimensionality. Yes, it's heavy. Yes, it needs a serious amp. But once it's on and the music is flowing, none of that matters.
- Production
- 2020-present
- Condition
- Cosmetic 9.5/10 - Electronic 10/10
- Serial No.
- 6490/6472
- Orig. MSRP
- $1,899
- Restoration
- Replaced ear pads
- Thoroughly tested and detailed
- Includes Balanced and unbalanced cables
- Factory Specs
Design Open-back, over-ear
Driver Type Full-range AMT (Air Motion Transformer) with VVT® (Variable Velocity Transformation) technology
Frequency Range 10 Hz – 40 kHz
Impedance 42 Ω
Sensitivity 87 dB / 1 mW
Power Requirement (Minimum) 200 mW
Power Requirement (Recommended) ≥1000 mW
Weight 1.61 lbs (730 g)
Connection Type Dual 4-pin mini-XLR at earcups
Included Cable 2.2 m, dual 4-pin mini-XLR to 6.35 mm (1/4") jack
Country of Assembly Germany (Berlin)
- Documentation
- HEDD HEDDphone One Owner's Manual
- Liner Notes
Released in 2020, the HEDDphone® was designed to bring the clarity and accuracy of our Air Motion Transformer driver to the headphone world. Thanks to its open-back design and a redesigned AMT allowing the reproduction of frequencies from 10 to 40kHz, it has won accolades from the likes of Sound on Sound and has been the choice for top engineers across genres. Immerse yourself in a world of unparalleled clarity and natural music reproduction, wherever you go.
- Packing
- Prepare to be impressed. We have arguably the best packing process around. We use our InstaPak machine and white open cell foam to build a custom enclosure for your piece that ensures that it's stable and secure. If it is particularly fragile or heavy, we typically opt for private courier delivery. Depending on where you are in the country, that may cost a bit extra.
- Shipping
- This piece ships to the contiguous United States for a flat rate of $50, which includes our packaging and our insurance. Of course, we'll ship anywhere in the world, just drop us a line and we'll give you an estimate – even if you're just curious.
- Stock No.
- 15410613846237
The HEDDphone One is the kind of headphone that makes you question everything you assumed was achievable from transducers sitting against your ears. As the world's first full-range Air Motion Transformer headphone, it delivers a presentation that's genuinely, almost unnerving in its openness — that accordion-fold AMT driver conjures a soundstage that simply doesn't feel like it lives inside your skull. Detail retrieval is forensic without being clinical, transients arrive with a snap and immediacy that few planar or dynamic drivers can touch, and the top-end extension clean to 40kHz gives the air around instruments a real, physical dimensionality. Yes, it's heavy. Yes, it needs a serious amp. But once it's on and the music is flowing, none of that matters.
Production
2020-present
Condition
Cosmetic 9.5/10 - Electronic 10/10
Serial No.
6490/6472
Orig. MSRP
$1,899
Restoration
- Replaced ear pads
- Thoroughly tested and detailed
- Includes Balanced and unbalanced cables
Factory Specs
Design Open-back, over-ear
Driver Type Full-range AMT (Air Motion Transformer) with VVT® (Variable Velocity Transformation) technology
Frequency Range 10 Hz – 40 kHz
Impedance 42 Ω
Sensitivity 87 dB / 1 mW
Power Requirement (Minimum) 200 mW
Power Requirement (Recommended) ≥1000 mW
Weight 1.61 lbs (730 g)
Connection Type Dual 4-pin mini-XLR at earcups
Included Cable 2.2 m, dual 4-pin mini-XLR to 6.35 mm (1/4") jack
Country of Assembly Germany (Berlin)
Documentation
HEDD HEDDphone One Owner's Manual
Liner Notes
Released in 2020, the HEDDphone® was designed to bring the clarity and accuracy of our Air Motion Transformer driver to the headphone world. Thanks to its open-back design and a redesigned AMT allowing the reproduction of frequencies from 10 to 40kHz, it has won accolades from the likes of Sound on Sound and has been the choice for top engineers across genres. Immerse yourself in a world of unparalleled clarity and natural music reproduction, wherever you go.
Packing
Prepare to be impressed. We have arguably the best packing process around. We use our InstaPak machine and white open cell foam to build a custom enclosure for your piece that ensures that it's stable and secure. If it is particularly fragile or heavy, we typically opt for private courier delivery. Depending on where you are in the country, that may cost a bit extra.
Shipping
This piece ships to the contiguous United States for a flat rate of $50, which includes our packaging and our insurance. Of course, we'll ship anywhere in the world, just drop us a line and we'll give you an estimate – even if you're just curious.
Stock No.
15410613846237
