Astell&Kern x 64 Audio XIO In-Ear Monitors

🧾 Overview

The Astell&Kern x 64 Audio XIO are flagship universal in-ear monitors co-engineered by Astell&Kern and 64 Audio — combining the musicality of 64 Audio’s tia technology with the precision craftsmanship of A&K. Hand-assembled from 904L stainless steel and finished with a Diamond-Like Carbon (DLC) coating, the XIO embodies reference-grade sound with a refined, luxurious aesthetic. Its hybrid 10-driver array and interchangeable Apex modules deliver a customizable sound signature that bridges studio precision and emotional engagement.

✅ Key Features

• ✅ 10-driver hybrid system: 2 dynamic + 7 balanced armatures + 1 tia high driver
• ✅ 4-way passive crossover for seamless frequency integration
• ✅ 904L stainless steel shell with DLC (Diamond-Like Carbon) coating
• ✅ Interchangeable Apex modules (m20, m15, m12, mX) for adjustable isolation and bass response
• ✅ 4.4 mm balanced silver-plated UP-OCC copper Litz cable with 0.78 mm 2-pin connectors
• ✅ Handcrafted in collaboration with 64 Audio for Astell&Kern
• ✅ Designed for both portable hi-res players and professional monitoring

📦 What’s in the Box

• 🎧 1 × Astell&Kern x 64 Audio XIO In-Ear Monitors
• 🔌 1 × 4.4 mm balanced silver-plated UP-OCC copper Litz cable
• 🧳 1 × 64 Audio Premium Leather Carrying Case
• 🎯 12 × Ear Tips: TrueFidelity Foam (S/M/L), SpinFit Silicone (S/M/L), Silicone (S/M/L)
• ⚙️ Apex Modules: m20 (Silver), m15 (904L DLC Steel), m12 (Gold), mX (Black)
• 🧼 Cleaning Tool & Microfiber Cloth
• 📎 Cable Clip
• 📖 Quick Start Guide

🔄 Compatibility

✔ Ideal pairing with Astell&Kern DAPs (4.4 mm balanced output)
✔ Suitable for studio monitoring, audiophile listening, and on-stage use
✔ Compatible with any balanced portable amplifier (4.4 mm TRRRS standard)

📦✈️ Shipping & Returns

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

📝 Reviews

💬 Be the first to share your impressions — describe your sound journey with the XIO.

⚠️ Warning

⚠️ Warning: Once you hear the XIO’s holographic soundstage and pinpoint imaging, even your favorite reference IEMs might start feeling jealous.