• Four different types of drivers
• Perfectly harmonized driver structure
• Highest crossover network management
• Acoustic chamber by 3D print technology
• Precise CNC metal housing
• Hi-Fi grade pure silver-coated OFC cable
• Made in Japan

• High—crisp and dynamic treble sound
• The micro rectangular planar dynamic driver is specifically developed to deliver high frequencies, featuring advanced technology that allows a planar driver to be used in IEMs, despite the extreme difficulty in making it small enough to fit in such a small cavity. A&K selected a light yet sturdy planar membrane to minimize frequency loss and applied a trembler with a thin metal membrane and polymer film to create lifelike vivid high frequencies. This provides a clear and dynamic high-frequency response.

Dual Custom Balanced Armature Drivers

• Mid-Low—transparent vocal sound
• Full Range—perfectly balanced and rich sound
• The Coil Parameter Dual Custom BA Driver is a custom-made driver designed to reproduce both full-range and mid- to low-range frequencies. It comes with a total of four drivers: two BA drivers that offer ultralow distortion to create clear low- to mid-ranged vocal sounds and two BA drivers that offer perfectly balanced rich sounds, uniquely tuned to harmonize each frequency range, playing perfect sounds.

Single 10mm Dynamic Driver with Piezoelectric Transducer

• Low & Super High—the deepest bass and clear treble sound
• Various types of carefully designed drivers create rich, Hi-Fi sounds. The 10mm dynamic driver used in the AK ZERO2 is meticulously manufactured using a fully automated process. This allows the driver to recreate rich and deep low frequencies. An additional piezoelectric transducer works in tandem with the dynamic driver, serving as a super tweeter that asserts its presence in the super-high frequency range that many IEMs struggle to recreate.