Astell&Kern AK ZERO1 Universal In-Ear Monitors

🧾 Overview

The Astell&Kern AK ZERO1 are universal-fit hybrid in-ear monitors that blend three transducer technologies for studio-grade clarity on the go. With a special micro rectangular planar driver, dual custom balanced armatures, and a 5.6 mm micro dynamic driver, ZERO1 deliver fast transients, natural mids, and extended highs in a robust aluminum shell.

✅ Key Features

• ✅ Hybrid 4-driver system: planar + 2× custom BA + 5.6 mm micro dynamic
• ✅ Precision-milled aluminum housings for low resonance and durability
• ✅ MMCX connectors with detachable 3.5 mm cable for easy upgrades
• ✅ Wide 25 Hz – 30 kHz response with articulate bass and airy treble
• ✅ Easy to drive: 16 Ω impedance, 96 dB SPL @ 1 kHz (1 mW)
• ✅ Low distortion design: THD 0.7% @ 1 kHz
• ✅ Rich accessory kit: 5 sizes of silicone tips + Comply foam, carry case

📦 What’s in the Box

• 🎧 2 × AK ZERO1 earphone housings
• 🔌 1 × 3.5 mm headphone cable with MMCX connectors
• 🧩 5 × silicone ear tips (S, M, L, XL, XXL)
• 🧩 1 × pair Comply foam ear tips
• 👜 1 × carry case
• 📖 1 × Quick Start Guide

🔄 Compatibility

✔ Works with any device featuring a 3.5 mm headphone output (DAPs, smartphones with adapters, DAC/amps, laptops).
✔ Detachable MMCX cable allows easy upgrade to balanced cables (e.g., 2.5/4.4 mm with appropriate MMCX cable).
✔ Tip set covers a wide range of ear sizes for secure fit and optimal seal.

📦✈️ Shipping & Returns

• 📦 Insured EU & worldwide delivery
• 🔄 14-day return policy
• 🛡️ 2-year EU warranty

📝 Reviews

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⚠️ Warning

⚠️ Warning: These hybrids may cause sudden re-listening to your entire library, tip-rolling marathons, and unsolicited lectures about planar vs BA timbre.