AK ZERO1 In-Ear-Monitors

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.
Astell&Kern worked tirelessly to find ways of helping more people enjoy the pleasure of music and strive to develop sound as true to analog as possible.
AK ZERO1 is the first model that offers the sound that only Astell&Kern can provide.
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
Introducing the first In-Ear Monitor from Astell&Kern, the long-awaited AK ZERO1.

AK ZERO1

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 a new 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 on experience in IEM manufacturing from “ZERO,” Astell&Kern pushed to make ZERO1 a truly best in class product and a market leader in the Hi-Fi IEM arena.

The Hybrid IEM with Each Driver's AK Sound Distributed Harmoniously.

The hybrid IEM AK ZERO1 focuses on combining the sounds of three unique driver technologies into one IEM. 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, Astell&Kern eliminated unnecessary movement and resonance of the drivers to ensure a stable performance. The housing, which is designed with Astell&Kern's unique advanced aluminum-refining technology, keeps resonance to a minimum and creates the highest-quality sound.

Special Micro Rectangular Planar Dynamic Driver, Crisp and Dynamic Treble Sound

The Micro Rectangular Planar Dynamic Driver is a specially developed driver with highly advanced technology that allows a planar driver, normally a very difficult driver to scale down, to be applied to in-ear monitors.

Dual Custom Balanced Armature Driver, Transparent Vocal Sound

Two BA drivers are made using custom coil parameters and offer crystal-clear vocals with super-low distortion.

Single 5.6mm Dynamic Driver, Rich and Deep Bass Sound

The 5.6 mm Dynamic Driver has been created through a fully automated, error-free process, ensuring rich, controlled and deep low frequencies.

Hi-Fi Grade Pure Silver-Coated OFC 4 Core Cable (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.
*4.4mm balanced cable sold separately.

Made in Japan

The Hybrid IEM AK ZERO1 is meticulously manufactured and assembled by highly experienced engineers in facilities in Japan to the highest of tolerances, achieving the highest quality possible.

AK ZERO1's premium sound will open up a whole new world that you have never experienced before, elevating you beyond the boundaries of sound. This is symbolized by the bold diagonal line that crosses the product, reflecting the identity of the AK ZERO1. "The Boundary to a New World” This key phrase encompasses the design of the AK ZERO1. The cut surface created by the character line of the AK ZERO1 shimmers in the light, emphasizing the premium quality of the product. The shape of the AK ZERO1 has been carefully designed and refined along the inner ear canal to fit your ears perfectly. Light bounces off each surface, making the earpieces glisten like jewelry.

What's in the Box?

• AK ZERO1 Earphones L/R x 1
• 3.5mm MMCX Cable x 1
• 5 Pairs of Silicone Ear tips
• 1 Pair of Foam Tips
• Carrying Case x 1

Press and Reviews

Zero 1 Review

by Major HiFi
Nov. 2021