The HEDDphone TWO GT gives the company’s open-back AMT headphone platform a more refined and listenable edge, priced at $2,199. While the model itself is not brand new for 2026, it is now getting a bigger push, and the timing makes sense. Built on the foundation of the HEDDphone TWO, the GT version adds warmer tuning, an updated AMT driver engineered for lower distortion, upgraded 4 core 5N silver plated copper cables, and interchangeable velour and leather ear pads for more flexibility at home.
The goal here is not to turn the HEDDphone TWO GT into some soft, sleepy lounge chair with ear cups. HEDD is still aiming at the Head-Fi crowd that wants speed, detail, imaging, and low distortion from an open-back headphone. The difference is that the GT appears to push the presentation in a richer and smoother direction, with less emphasis on clinical sharpness and more focus on long term listening.
German precision, fewer ice picks. Ordnung restored.
HEDD Audio: Berlin Accuracy Learns to Relax
Founded in 2015, Heinz Electrodynamic Design, better known as HEDD Audio, is the work of physicist Klaus Heinz and his son, Dr. Frederik Knop. Klaus brought decades of loudspeaker engineering experience to the table, including his earlier work with ADAM Audio and the Air Motion Transformer technology that helped define that company’s reputation in studio monitoring. Frederik added his own background as a musicologist and mastering engineer, making HEDD less of a vanity project and more of a very serious Berlin family argument about what accuracy is supposed to sound like.
That obsession with precision has shaped HEDD’s loudspeakers and headphones from the beginning. Products like the original HEDDphone and the Type 20 MK2 monitors were not designed to flatter bad recordings or make everything sound like Sunday morning espresso. They were built to expose detail, dynamics, imaging, and tonal balance with the kind of discipline that makes German engineers sleep peacefully at night.
The HEDDphone TWO GT suggests that HEDD may be allowing a little warmth into the room without abandoning the blueprint. With warmer tuning and an updated AMT driver engineered for lower distortion, the GT appears to move the platform toward a richer, smoother presentation while still keeping the speed, clarity, and low-distortion character that made HEDD headphones stand out. Accuracy is still the house religion at HEDD. The GT just suggests that even Berlin engineers occasionally allow a little Gemütlichkeit into the listening room.
HEDDphone TWO GT: Warmer, Smoother, Still Berlin
The HEDDphone TWO GT takes the existing HEDDphone TWO platform and shifts the focus away from technical monitoring and closer to long-term listening. The biggest change is the updated AMT driver, which now uses a redesigned multi-layer Kapton polyimide film and is engineered for even lower distortion.
HEDD’s Variable Velocity Transformation technology allows the driver to reproduce a claimed frequency range of 10Hz to 40kHz, which keeps the TWO GT firmly planted in the high-end audiophile category rather than the lifestyle headphone aisle where Bluetooth codecs go to argue with marketing departments.
The tuning is also different from the standard HEDDphone TWO. HEDD describes the GT as warmer and more emotionally engaging, with a richer and smoother presentation aimed at music lovers rather than engineers dissecting kick drums at 2 a.m. That does not mean HEDD has abandoned accuracy. It means the company appears to have softened the edges enough to make the TWO GT more inviting for extended listening.
Comfort and fit remain central to the design. The adjustable HEDDband allows users to fine-tune height, width, curvature, and clamping pressure, which matters on a serious open-back headphone intended for long sessions at home. HEDD also includes two sets of interchangeable ear pads, real leather and velour, giving listeners some flexibility in comfort and possibly tonal presentation.
Materials include carbon fiber and magnesium to help reduce weight while maintaining durability. Visual updates include an embossed logo and new stitching details on the HEDDband, subtle changes rather than a redesign for people who need their headphones to look like they escaped from a concept car.
The standard HEDDphone TWO GT package includes premium hand-braided, nylon-woven 4-core 5N silver-plated copper cables. Buyers get a 1.6-meter unbalanced cable with 6.35mm termination, a 6.35mm to 3.5mm adapter, a 1.6-meter balanced cable with 4.4mm termination, and a 4.4mm to 4-pin XLR balanced adapter. A higher-end GTC upgrade cable with 8-core LC OFC construction is available separately.
HEDD is also offering the TWO GT in an UNPLUGGED configuration, which includes the same headphone but omits the cables and ships with a carry case and a single set of ear pads. That version makes sense for listeners who already own aftermarket cables and do not need another small collection of terminations in the drawer — although experience tells us that you never have enough of these types of adapters and extra cables.
A sturdy travel case is included, and HEDD backs the TWO GT with a 5-year warranty after registration.
HEDDphone TWO GT Specs:
- Design: Open back, over ear headphone
- Driver: Air Motion Transformer with VVT technology and multi layered Kapton polyimide diaphragm
- Frequency Range: 10 Hz to 40 kHz
- Impedance: 41 ohms, flat
- Power Requirement: Minimum 200 mW, recommended 1,000 mW or higher
- Input: 3.5mm jack
- Weight: 550g
- Maximum SPL: 88 dB SPL at 1 mW
The Bottom Line
The HEDDphone TWO GT is not a casual plug and play headphone for the subway crowd. It is a serious open back AMT headphone built for home listening, with warmer tuning, a redesigned multi layered Kapton AMT driver, lower distortion, VVT technology, interchangeable ear pads, premium cabling, and a very flexible HEDDband fit system. What makes it different is the combination of HEDD’s studio born speed and precision with a tuning clearly aimed at audiophiles who want more body, smoothness, and long term listening comfort.
The eyebrow raiser is the 550g weight. HEDD has done real work on ergonomics, clamping pressure, materials, and pad options, but physics still gets a vote. The 41 ohm flat impedance is amplifier friendly on paper, but the recommended 1,000 mW of power means buyers should use a proper desktop headphone amplifier rather than expecting miracles from a phone dongle. At $2,199, this is for listeners who already know they want an open back reference level headphone and are willing to trade portability for scale, speed, and comfort tuned for longer sessions. A bissel Gemütlichkeit, but with German paperwork.
Where to buy: $2,199 at Headphones.com
Tip: Don’t need accessories or cables, get the Unplugged version for $1,699 at Headphones.com.
Related Reading:
- HEDDphone D1: German-Made Dynamic Open-Back Headphones Take Direct Aim At Sennheiser
- The HEDDphone Two Is Lighter And Features An Updated AMT Driver
- HEDD HEDDphone Review: Meet The New Boss? Definitely Not The Same As The Old Boss
- AKG K1000 Returns At AXPONA 2026 As Apos Revives Iconic ‘Earspeaker’ Headphone
