The New Standard for Hybrid Sound

The AK ZERO1 is a brand-new In-Ear Monitor product from Astell&Kern.
Astell&Kern strives to inspire and bring enjoyment to all, through the magnificence of experiencing music as close to the original sound.

We worked tirelessly to find ways of helping more people enjoy the pleasure of music and strove to deliver sound as true to analog as possible.

AK ZERO1 is the first model that offers the sounds that only Astell&Kern can provide. Let us introduce the first In-Ear Monitor from Astell&Kern, the long-awaited AK ZERO1.

Three Different Types of Drivers
Perfectly Harmonized Driver Structure
Highest Cross-Over Network Management
Acoustic Chamber created using 3D Printed Technology
Precise CNC Machined Metal Housing
Hi-Fi Grade Pure Silver-Coated OFC Cable
Hand Crafted in Japan

ZERO is a number that represents the reference point, and it also means the beginning. Astell&Kern, the global leader in the Hi-Fi portable audio market, introduces the In-Ear Monitor product from the starting point of "ZERO". AK ZERO1 is a new start for Astell&Kern and aims to be the new standard for In-Ear Monitors. By building our experience in IEM manufacture from “ZERO” we push to make ZERO1 a truely best in class product and a market leader in the Hi-Fi IEM arena.

The Hybrid IEM with each driver's AK sound harmoniously distributed

Hybrid IEM AK ZERO1 focuses on combining the sounds of three unique driver technologies into one.

Composed of a Micro Rectangular Planar Dynamic Driver, two BA drivers, and a 5.6 mm Dynamic Driver, the AK ZERO1 harmonizes the characteristics of each driver to deliver the most natural sound to your ears.

An ideal frequency response was created through the Cross Over Network, which is designed based on a thorough understanding of each driver’s parameters. At the same time, each driver is carefully placed in the optimal 3D position, enclosed in specifically designed acoustic chambers manufactured with precise 3D printing technology.

By implementing this, we eliminated unnecessary movement and resonance of the drivers to ensure a stable performance.

Hi-Fi Grade Pure Silver-Coated OFC Cable 4 Core (3.5mm Plug)

The Pure Silver-Coated OFC cable maximizes the performance of the Hybrid IEM AK ZERO1. It has been exquisitely crafted with high-purity silver plating and copper, and the aluminum plugs give it even more class.

The MMCX connector provides the best quality, offering a long-lasting stable performance.

Drivers: Hybrid Drivers (Special Micro Rectangular Planar Dynamic Driver x1 / Custom Balanced Armature Driver x2 / 5.6mm Micro Dynamic Driver x1)
Connector: MMCX
Housing Material: Aluminum
Frequency Response: 25Hz - 30kHz
SPL: 96dB@1KHz (1mW)
Impedance: 16Ω@1kHz
Total Harmonic Distortion: 0.7%@1kHz