HEDD Audio HEDDphone TWO Headphones

Full-range Air Motion Transformer technology with an open-back design and 41-ohm impedance

Designed and assembled in Berlin, the HEDDphone TWO brings HEDD’s approach to studio monitoring to an Air Motion Transformer headphone. Its redesigned full-range AMT driver uses a folded diaphragm and HEDD’s Variable Velocity Transformation (VVT) technology to reproduce frequencies from 10 Hz to 40 kHz.

The diaphragm’s construction addresses a familiar limitation: conventional AMT drivers are typically used for high frequencies. HEDD extends this operating range by varying the folds in width and depth. Rather than moving as a flat surface, the folded Kapton diaphragm squeezes air between its folds. According to HEDD, this approach supports fast transient response and accurate reproduction across the audible spectrum.

Comfort and Amplifier Matching

The open-back, over-ear design pairs soft vegan ear pads with HEDD’s adjustable HEDDband. Separate size and tension straps let you adjust height, width, curvature, and clamping pressure, while carbon fiber and magnesium help reduce weight to 1.21 lb. A sensitivity of 89 dB at 1 mW makes a capable desktop headphone amplifier an appropriate partner. Detachable cables connect to both earcups through 3.5 mm connectors, while replaceable ear pads support long-term ownership.

Features

• Redesigned full-range Air Motion Transformer driver
• Variable Velocity Transformation technology with folds of varying width and depth
• Open-back, circumaural design
• Soft vegan ear pads
• HEDDband with adjustable fit and clamping pressure
• Carbon fiber and magnesium construction
• Detachable cables and replaceable ear pads
• Designed and assembled in Berlin

Included Accessories

The following accessories are included with the Standard configuration.

• 2.2 m unbalanced headphone cable with a 6.35 mm source plug
• 2.2 m balanced headphone cable with a 4.4 mm source plug
• 6.35 mm to 3.5 mm adapter
• 4.4 mm to 4-pin XLR balanced adapter
• Spare pair of vegan ear pads
• Travel case

The UNPLUGGED configuration includes a carrying case only, without the cable and accessory package above.

Specifications

Design: Open-back, over-ear

Driver Type: Air Motion Transformer with full-range Variable Velocity Transformation technology and Kapton polyimide diaphragm

Frequency Range: 10 Hz–40 kHz

Sensitivity (At 1 mW): 89 dB SPL

Impedance: 41 ohms, flat

Ear Pads: Vegan PU leather

Headphone Connections: Dual 3.5 mm

Cables (Standard Configuration): Detachable, Kevlar-infused braided OFC, 2.2 m; 6.35 mm unbalanced and 4.4 mm balanced plugs

Weight: 1.21 lb. (0.55 kg)