Unique Melody Mason Asahi In-Ear Monitors

Mason Asahi continues the tradition of the Mason series and offers a bold reinterpretation of space, structure and sound. At its heart is a Next-generation 3D Bone Conduction System, the Designed to enhance spatial perception without physical vibrations, Mason Asahi combines twelve precisely tuned balanced armature drivers with a powerful, sleek, and emotionally authentic listening experience.

UM 3D Bone Conduction System
Our UM 3D bone conduction array positions a three-axis bone conduction system along the X, Y, and Z planes, reconstructing sound like never before. The result is:

• Realistic spatial depth
  
• improved imaging and positioning
  
• Vibrations that you can feel throughout your entire skull – not just in your ears

With this three-axis layout, Mason Asahi simulates how sound spreads through a room, conveying a sense of presence that simply cannot be achieved with conventional bone conduction.

Full frequency range, full-bodied sound
Mason Asahi uses three bone conduction drivers, each tuned to a specific part of the frequency range. Together they provide power in the bass range, presence in the midrange and extended details in the treble range.

• The bass is deeper and more structured.
  
• The mids are clearer and more expressive.
  
• The highs extend smoothly up to 35 kHz.

This multi-axis configuration allows bone conduction to contribute across the entire bandwidth and thus ensures a more immersive and natural reproduction without changing the sound balance or to cause fatigue.

Twelve balanced armature drivers. Six ways. Consistent tuning.
A total of twelve balanced armature drivers are distributed across three frequency bands for optimal performance:

• 4 woofers for a clear, rich bass
  
• 4 midrange drivers for presence and smooth articulation
  
• 4 tweeters for detailed yet controlled highs

The six-way crossover ensures that each driver operates in its ideal range, delivering speed, resolution, and sonic accuracy that remain balanced at all volume levels.

Two systems. One seamless experience.
Mason Asahi combines air and bone conduction in a single, seamless Architecture. This dual-pronged approach combines the soundstage and spatiality of natural bone conduction with the precision and detail of balanced armature drivers for an immersive, realistic soundstage.

The result is a more natural listening experience. Immersive, precise, and deeply captivating:

• Multiple conduction paths provide a subtle dynamic texture.
  
• The improved coupling design increases efficiency by more than 2.3 times compared to our previous bone conduction systems.
  
• The spatial projection is expanded, offering an enveloping width and layering from front to back.

Materials suitable for crafts
The Mason Asahi shell is made of rare hardwoods and high-strength carbon fiber composite. These materials are pressed into shape using precision molds, resulting in a design that is both functional and artistic. The optical surface evokes the first light of dawn. Warm golden wood grain blends into woven carbon structures, blending organic and modern elements in a way that appears timeless and balanced.

UM Fantasy Custom Cable
Every Mason Asahi comes with the UM Fantasy custom cable. Designed to preserve the finest details and eliminate unwanted noise, the UM Fantasy is a good match for neutral and high-resolution sources.

• 26 AWG high-purity OCC copper
  
• Quad-core construction, each with four shielding layers
  
• PVC, nylon and FEP insulation for flexibility and durability

Leather case, carefully crafted
The case is covered with Italian cowhide and lined with Indian goat suede.

• Outer shell in UM-typical blue
  
• Inner lining made of warm, tea-brown suede, soft as morning mist
  
• Structured, protective and haptically refined

The case reflects the same values as the headphones it protects – durability, sophistication, and understated luxury.