High-end reference headphones with ruby acoustic filter. The R1 is the world's first balanced headset to use Ruby as an acoustic filter. It is just as impressive in terms of performance as in terms of aesthetics and design. The extremely hard Ruby material, used as an acoustic filter, significantly suppresses stray resonances inside the unit and provides incredible depth and clarity throughout the frequency spectrum. It provides a sound stage and dynamic range that you haven't heard before with earbuds.

• The R1 uses a machined low resonance aluminum housing
• 4N OFC Silver-plated cable with 3.5mm gold-plated angled connector
• Includes Comply ™ foam earbuds for airtightness and sound insulation
• Replacement set of earbuds
• Comes with a storage case made of domestic cowhide
• Made in Japan