Astell & Kern AK Zero1 Hybrid IEM Earphones

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The AK Zero1 is a brand-new in-ear monitor earphone from Astell&Kern.

Zero1 focuses on combining the sounds of three unique driver technologies into one high-quality IEM experience. Containing a Micro-Rectangular Planar Driver, two Balanced Armature Drivers, plus one 5.6 mm Dynamic Driver, the AK Zero1 harmonises the characteristics of each driver to deliver the most natural, musical sound to your ears.

The ideal frequency response is created by the crossover network, which has been 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, 3D printed for the perfect precise fit.

The end result is the elimination of unnecessary movement and resonance of the drivers, ensuring a totally stable performance.

Zero1 is supplied with a hi-fi grade pure silver-coated OFC cable, with aluminium MMCX connectors offering the best quality, long-lasting, stable performance. (4.4 mm balanced cable is available separately.)

The premium sound of AK Zero1 will open a whole new world that you have never experienced before. The design features of this bold new IEM match the impressive sound, with cut surfaces which reflect the light and enhance the premium quality.


  • Three different types of driver technology.
  • Perfectly harmonised driver structure.
  • Highest crossover network management.
  • 3D printed acoustic chambers.
  • Precise CNC machined metal housing.
  • Hi-Fi grade pure silver-coated OFC cable.
  • Hand-crafted in Japan.


  • Model: AK Zero1
  • Drivers: Hybrid Drivers (Micro Planar / Micro Balanced Armature / Micro Dynamic Driver)
  • Connector: MMCX
  • Housing Material: Aluminium
  • Frequency Response: 25 Hz - 30 kHz
  • SPL: 96 dB @ 1 kHz (1 mW)
  • Impedance: 16 Ohms @ 1 kHz
  • THD: 0.7% @ 1 kHz


  • Zero1 Earphones L/R
  • 1x 3.5 mm MMCX Cable
  • 2x Mini XLR to XLR Cable
  • 5x Pairs of Silicone Ear Tips
  • 1x Pairs of Foam Tips
  • 1x Carrying Case

More Information

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Astell & Kern
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Headphone Features

Dynamic Driver Size:
5.6 mm
Transducer Type:
Hybrid 3-Driver
Ear Cup:
Closed Back
Headphone Type:
  • Hybrid Planar / BA / Dynamic Earphones
  • HiFi Headphones
  • In Ear Headphones
16 Ohms
Frequency Range:
25 - 30,000


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Our Advantages

  • Worldwide shipping, fast, insured & tracked. Details
  • Clear, simple returns policy. Details
  • UK-based company, established since 1985. Details
  • Visit our London showroom to demo a huge selection of headphones, earphones & portable players. Details