Field Test · Studio Gear Review
HEDD HEDDphone One
Technical insights on the HEDD HEDDphone One open-back headphones
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Spec Sheet
- Open design
- Over-ear design with Air Motion Transformer driver (electrodynamic converter)
- Power: 87 dB / 1mW
- Impedance: 42 Ohm
- Frequency range: 10 – 40,000 Hz
- Weight: 718 g
- Includes 2.2 m cable with 6.3 mm jack plug / 4-pin Mini-XLR
Studio Log
| Available since | February 2020 |
|---|---|
| Item number | 484990 |
| Sales Unit | 1 piece(s) |
| Design | Over-Ear |
| System | Open |
| Impedance | 42 Ohms |
| Frequency range | 10 Hz – 40000 Hz |
| Adapter | Yes |
| Replacable Cable | Yes |
| Marrone/Argento | Black |
| Sensitivity | 87 dB |
| Type Of Connector | Jack(stereo) |
| Weight | 718 g |
| Replaceable Cable | Yes |
| Colour | Black |
Demo Footage
Field Photography
QC Pass — Field Test
Customer Review Summary
Introduction to the HEDDphone One
The HEDDphone One, released in February 2020, is an over-ear, open-back headphone designed by HEDD for professional audio applications. Positioned at a premium price of £1,444, it aims to deliver exceptional sound quality for mixing, mastering, and critical listening. This review analyses its design, technical specifications, and real-world performance feedback to assess its suitability for demanding audio tasks.
Technical Specifications
- Driver Technology: Air Motion Transformer (electrodynamic converter)
- Impedance: 42 Ohms, facilitating compatibility with a range of audio equipment
- Frequency Response: 10 Hz to 40,000 Hz, covering an extensive audible spectrum
- Sensitivity: 87 dB at 1mW
- Design: Open-back, over-ear
- Weight: 718 grams
- Connectivity: Jack stereo connector with replaceable 2.2m cable featuring both 6.3 mm jack and 4-pin Mini-XLR
- Colour: Black
Acoustic Performance
The defining feature of the HEDDphone One is its Air Motion Transformer driver technology, unusual in headphones but acclaimed for delivering accurate transient response and high-resolution audio reproduction. User reports consistently highlight an expansive and transparent soundstage with remarkable definition across frequencies.
Notably, the headphones excel in revealing minute details in complex mixes, making them highly suitable for professional producers and engineers. The frequency range extends well beyond standard limits, offering a rich low-end and an airy top-end that avoids harshness. Several users note that the sound balance and timbral accuracy offer insights not typically experienced with dynamic or planar magnetic headphones.
Bass and Sub-bass
Contrary to some initial concerns in the community, the HEDDphone One maintains sufficient bass presence without overpowering other frequencies. Producers working in electronic genres such as EDM and trance report very useful bass clarity, essential for fine-tuning low-frequency elements in their mixes.
Midrange and Treble
The midrange maintains clarity and neutrality, supporting natural vocal and instrumental tones. The treble is detailed and articulated but subjectively not fatiguing when listened to at moderate levels. This quality suits prolonged listening during critical mixing stages.
Build and Comfort
The open-back, over-ear design facilitates breathability, which is appreciated for professional use. However, the headphones weigh 718 grams, which many users find heavy when worn for extended periods. Reports indicate a tendency for pressure points after around 30 to 90 minutes, requiring occasional repositioning to maintain comfort.
Additionally, the replaceable cables are robust but may pose handling challenges due to stiffness. The connection with the Mini-XLR plugs has been noted to feel less secure than expected, a minor drawback considering the overall build quality.
Practical Considerations
Included is a 2.2-metre cable with 6.3 mm jack and a 4-pin Mini-XLR adapter, enhancing connectivity options across professional audio devices. Given the open-back design, the headphones are not suited for use in noisy environments or situations requiring isolation.
Potential purchasers are advised to trial the headphones in person, allowing for assessment of comfort over longer listening sessions, given the weight and pressure distribution characteristics.
Summary and Verdict
The HEDD HEDDphone One stands out for its detailed, transparent sound delivery, tailored for discerning audio professionals who prioritise accuracy and insight in their monitoring. The Air Motion Transformer technology drives a unique sound signature with excellent separation and spatial impression.
Trade-offs include a relatively heavy frame and some comfort limitations during prolonged use. Cables are durable but may benefit from greater flexibility and improved connector security. For those willing to manage these ergonomic considerations, the HEDDphone One provides a high-end monitoring experience difficult to match in this price range.
Overall, the HEDDphone One is highly recommended for mixing and mastering engineers seeking uncompromising sonic performance, particularly in controlled studio environments where its open design and weight are less problematic.
