The DUNU Mortise are full-sized open-back headphones featuring 50mm dynamic drivers and wooden cups made from North American black walnut. The model is built with an ultra-thin carbon fiber diaphragm with independent flexible suspension and a magnetic system based on N52 neodymium magnets. The open-back design is aimed at providing a natural sound delivery and a wide soundstage. Recommended for those looking for aesthetically pleasing open-back headphones with a focus on the technicality of dynamic sound and willing to provide them with a high-quality signal source.
Advanced Driver Technologies
The headphones are equipped with a custom 50mm dynamic driver with an ultra-thin and extremely rigid carbon fiber diaphragm. The W-shaped geometry of the diffuser profile, combined with the independent flexible suspension, allows DUNU engineers to achieve perfect control over the movement of the diaphragm. The heart of the driver is a powerful magnetic system based on highly efficient N52 neodymium magnets with a high magnetic flux density. This combination results in an extremely low total harmonic distortion (THD) of <0.2% for the dynamic driver class. The headphones deliver fast, punchy, and textured bass, as well as transparent mid frequencies without any hint of muddiness in the vocal range.
Signature Cable and Ergonomics
The headphones come with a detachable 4-wire cable made of high-purity monocrystalline copper measuring 1.5 meters in length. Reliable 3.5mm two-pin connectors are used on the headphone side, while the source side features a patented modular Q-Lock Mini system. This system allows for easy switching between the standard 3.5mm (TRS) and balanced 4.4mm (Pentaconn) plugs included in the kit without the need to change the entire cable. The ergonomic headband construction with an adaptive suspension system evenly distributes the weight of the device (around 325 grams) on the head, while the ultra-soft memory foam ear pads ensure comfort.
Acoustic Design and Materials
The main visual and acoustic feature of the DUNU Mortise is its open-back cups made from North American black walnut. The outer side of the cups is protected by a sleek metal grill, allowing for free airflow and creating a wide, natural, and deep soundstage comparable to the sound of studio monitors.
Package includes:
- Headphones
- 3.5mm cable
- 4.4mm plug
- 3.5mm to 6.3mm adapter
- Carrying case
- Manual

































































