SP4000 Case
PD10 Case
A&ultima SP3000M Case
SP3000T Case
AK HB1 Case
KANN ULTRA Case
A&futura SE300 Case
A&norma SR35 Case
A&futura SE180 Case
KANN MAX Case
A&ultima SP3000 Case
A&norma SR25 MKII Case
3 Split Carrying Case
A&futura SE200 Case
SA700 Case
A&norma SR25 Case
A&ultima SP2000 Case
One Driver. Infinite Detail
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.
Tubeless In-Ear Audio (tia) is a patented IEM design that minimizes resonance and distortion, delivering clear and vivid sound.
The tia system consists of the tia driver, single-bore design, and acoustic chamber. XIO adopts the tia driver and single-bore structure to capture the pure essence of sound.
apex (Air Pressure Exchange) is a patented venting system that naturally releases pressure from the sealed ear canal while maintaining excellent noise isolation.
This technology reduces listening fatigue during extended sessions and provides a much wider, more realistic soundstage.
The m15 module, standard with XIO, is specially redesigned for XIO with DLC coating on 904L stainless steel, making it a unique apex solution exclusive to this model.
Linear Impedance Design (LID) is a patented circuit that compensates for nonlinear resistance between drivers, ensuring consistent sound quality regardless of changes in the output impedance of the source device.
This technology provides a stable sound signature and accurate frequency response at all times.
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.
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.
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.
