Astell&Kern AK ZERO 1 In-Ear Monitor

The AK ZERO 1 combines three distinct driver types—a micro rectangular planar, two custom balanced armatures, and a 5.6mm micro dynamic driver—into one unit. This configuration is designed to leverage the strengths of each technology to provide a balanced, high-fidelity sound profile across the entire frequency range.

No, this model relies on passive noise isolation. The fit of the ear tips and the precision-machined aluminum housing work together to physically block out external ambient noise.

Yes, the AK ZERO 1 uses standard MMCX connectors, allowing you to easily detach and replace the included pure silver-coated OFC cable if you wish to use a different compatible cable.

While they feature a standard 3.5mm jack, they do not have an integrated microphone or remote controls. They are designed primarily for high-quality music listening, so you may need a dedicated DAC or headphone adapter if your smartphone lacks a 3.5mm port.

With an impedance of 16 ohms, the AK ZERO 1 is relatively easy to drive. This means they can reach sufficient volume levels with most portable devices like smartphones, tablets, and portable digital audio players without requiring a powerful external amplifier.

Beyond its premium aesthetic and durability, the aluminum housing provides a rigid, vibration-resistant structure. This helps minimize unwanted resonance, ensuring that the sound produced by the internal drivers remains clean and accurate.