Astell&Kern XIO Universal 10-Driver Hybrid IEM Earphones

XIO 10-Driver Hybrid IEM Earphones, by Astell&Kern X 64 Audio.

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.

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.

tia® Waveguide

The tia® driver is designed with a direct-radiating structure that eliminates the traditional sound tube, enhancing the delicacy of high frequencies. This design minimizes damping and distortion, while the precisely positioned driver, together with a custom waveguide system, delivers a deep sense of space and airy, detailed highs.

BA Driver Manifold Assembly

The mid and upper-mid frequencies are powered by six and one balanced armature drivers, respectively, delivering smooth transitions and rich texture. Vocals, instruments, and their unique harmonic details are rendered warm and clear, creating a natural and well-balanced sense of space within the soundstage.

TRUE ISOBARIC Dual Dynamic Driver

The TRUE ISOBARIC structure features two dynamic drivers perfectly synchronized within an acoustically neutral coupling chamber, enabling precise control. This design delivers bass with exceptional depth and density, as well as powerful sound impact—surpassing what is typically possible with conventional IEMs.

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.

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.

Features

• High-end collaboration between Astell&Kern + 64 Audio.
• Meticulously engineered for precision.
• High-performance 10-driver hybrid array configuration.
• 4-way passive crossover system.
• Patented - tia / apex / LID - technologies.
• Precision-milled 904L stainless steel shell.
• High-end silver-plated UP-OCC copper Litz cable.
• Handcrafted in the USA.

Specifications

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

Included

• 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)

More Information

• XIO Hybrid 10-Driver IEM, by Astell&Kern