HEDD Audio HEDDphone TWO GT Headphones

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

Designed and assembled in Berlin, the HEDDphone TWO GT brings HEDD’s approach to studio monitoring to an Air Motion Transformer headphone tuned for music enjoyment. Its redesigned full-range AMT driver uses a multilayer Kapton diaphragm and HEDD’s Variable Velocity Transformation (VVT) technology to reproduce frequencies from 10 Hz to 40 kHz. HEDD describes the GT’s tuning as warmer and smoother than the TWO’s, with a revised diaphragm designed to reduce distortion.

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 replaceable 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 keep weight to 1.21 lb. A sensitivity of 88 dB at 1 mW makes a capable desktop headphone amplifier an appropriate partner. Detachable cables connect to both earcups through 3.5 mm connectors. The Standard configuration includes leather and velour ear pads, allowing you to choose your preferred feel.

Features

• Redesigned full-range Air Motion Transformer driver with a multilayer Kapton diaphragm
• Variable Velocity Transformation technology with folds of varying width and depth
• Warmer tuning developed for music enjoyment
• Open-back, circumaural design
• 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.

• 1.6 m unbalanced headphone cable with a 6.35 mm source plug
• 1.6 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
• Leather ear pads, preinstalled
• Additional pair of velour ear pads
• Travel case

The UNPLUGGED configuration includes a carrying case and one set of ear pads, without cables, adapters, or an additional pair of ear pads.

Specifications

Design: Open-back, over-ear

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

Frequency Range: 10 Hz–40 kHz

Sensitivity (At 1 mW): 88 dB SPL

Impedance: 41 ohms, flat

Ear Pads (Standard Configuration): Lamb leather and velour

Headphone Connections: Dual 3.5 mm

Cables (Standard Configuration): Detachable, hand-braided, nylon-woven 4-core 5N silver-plated copper, 1.6 m; 6.35 mm unbalanced and 4.4 mm balanced plugs

Weight: 1.21 lb. (0.55 kg)