Astell&Kern XIO In-Ear Headphones (IEM)

Description

64 Audio x Astell&Kern

XIO is the culmination of Astell&Kern and 64Audio’s shared philosophy on design and sound. Blending precision engineering with artistic sensibility, XIO goes beyond simply playing music. It shapes sound into a tangible experience, offering value that surpasses expectations.

Designed as a true object of art, XIO sets a new standard for high-end in-ear monitors—an uncompromising fusion of aesthetics and acoustics that redefines what’s possible.

Designed as a singular object, XIO sets a new standard for high-end in-ear monitors through its uncompromising approach to both aesthetics and acoustics.

Engineered for Precision

XIO is meticulously engineered both inside and out.

Its advanced hybrid system, featuring ten high-performance drivers, is finely tuned with a 4-way passive crossover to ensure every frequency is in perfect harmony.
This precise tuning delivers a realistic sense of depth and a rich, spacious soundstage.

Precision-milled 904L Stainless Steel Shell

The exterior of XIO goes beyond that of a typical IEM, standing out as an “audio art piece” that satisfies both visual and tactile senses.

Its robust structure is crafted by precisely machining 904L stainless steel—a material harder and more challenging to work with than standard stainless steel—and is then finished with a luxurious black DLC (Diamond-Like Carbon) coating for an exceptional premium texture.

The faceplate exhibits Astell&Kern’s design heritage, projecting a three-dimensional and elegant presence through deep shading and delicate reflections.

Silver Plated UP-OCC Copper Litz Cable

This dedicated cable, specially crafted for XIO, is designed to achieve perfect aesthetic harmony with the earbuds.

The four-core cross-braided cable is made from silver-plated, single-crystal copper (UP-OCC), offering outstanding noise shielding and transparent signal transmission.
With a low impedance of just 0.29Ω, it maximizes electrical efficiency.

Handcrafted IEM Made in the USA

64 Audio uses carefully selected components sourced from trusted partners around the world. Every step of design, assembly, and quality control is meticulously carried out by skilled engineers in the United States.

Components

· XIO Universal In-Ear Monitors
· 64 Audio Premium Leather Case
· TrueFidelity Foam Ear Tips (S,M,L)
· SpinFit Silicone Ear Tips (S,M,L)
· Silicone Ear Tips (S,M,L)
· Cleaning Tool
· Cleaning Cloth
· Cable Clip
· 4.4mm Silver Plated UP-OCC Copper Litz Cable
· Apex Modules: m20 (Silver)
Special m15 (904L Stainless steel with DLC Coating) m12 (Gold), mX (Black)

Specifications 

• Model : XIO
• Driver : 2 Low DD – 6 Mid BA – 1 High-Mid BA – 1 tia High BA
• Cable : 0.78mm 2-pin, 4.4mm Silver Plated UP-OCC Copper Litz Cable
• Material : 904L Stainless Steel with DLC (Diamond-Like Carbon) Coating
• Frequency response: 5Hz-22kHz
• SPL : 103dB @ 1kHz, 1mW
• Crossover : Integrated 4-way Passive Crossover
• Impedance : 6.3 ohms @ 1kHz