The AK Zero1 is rated at 16Ω@1KHz impedance, features three drivers per earpiece, and promises a "ground-breaking hybrid sound". Perhaps most interestingly, the AK Zero1 includes a specially developed micro rectangular planar dynamic driver, which is known to be tricky to scale down for use in an in-ear monitor. Additionally, there is a vibration panel boasting a high-polymer and thin metal film. Finally, the midband and vocal range are handled by dual balanced armature (BA) drivers using custom-designed coils with the lows produced by a 5.6mm dynamic driver resulting in a quoted 25Hz–30KHz frequency response and 96dB@1KHz (1mW) SPL.

AK Zero1

This array of drivers is then carefully placed in the optimal position and enclosed in specifically designed acoustic chambers manufactured with 3D printing technology within a CNC-machined metal housing.

AK Zero1

Astell&Kern's unmistakably angular aesthetics are apparent with the AK Zero1's housings treated to premium reflective cut metal surfaces. These would look great beside an equally angular A&K player.

Also bundled in with the earphones is a hi-fi-grade OFC cable crafted with high-purity silver plating and copper and terminated with aluminium plugs to maintain the audio signal's transparency, says A&K.

AK Zero1

MMCX connectors promise a top-quality connection between the earpiece housing and cable. However, if you want to upgrade the supplied cable, there's an optional 4.4mm MMCX cable accessory: the PEP11. This sports larger aluminium-machined 4.4mm plugs in addition to the high-purity silver plating and copper cable.

AK Zero1

To ensure the best fit, the slender ear nozzles come with five different-sized pairs of silicone ear tips and one set of foam. You also get a neat carry case.

The Astell&Kern AK Zero1 IEM is priced £649/ €749, and the Astell & Kern PEP11 cable, £119/ €139. Both are available from November.

Vist Astell&Kerm for more information

Jay Garrett's avatar

Jay Garrett

StereoNET’s resident rock star, bass player, and gadget junkie. Jay heads up StereoNET as Editor for the United Kingdom and Europe regions. His passion for gadgets and Hi-Fi is second only to being a touring musician.

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Posted in: Headphones

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