U.S. Patent #10,555,067 Issued Feb. 4, 2020 for the Company’s Method for Making 3D-Printed Housings for In-Ear Monitors (IEMs) This new patent is based upon 64 Audio’s ability to incorporate ...

Based Upon the Foundation of 64 Audio’s Acclaimed and Award-Winning Audiophile-Grade tia Fourté™, the Fourté Noir™ Includes the Industry’s First Completely Tubeless Technology Taken to the Next Level ...

Astell & Kern are one of the biggest names in portable hi-res audio, and 64 Audio – formerly 1964 Ears – are big in high-end IEMs. And now the two firms have collaborated to create the XIO in-ear ...

64 Audio celebrates 15 years of IEM innovation with new releases, the XIO with Astell&Kern, and a major showcase at CanJam SoCal 2025. In the golden age of Head-Fi, geography is just a suggestion.

Purveyor of both custom and universal in-ear monitors, 64 Audio has launched the Aspire 4, its ‘new generation’ universal in-ear monitor, which it claims is its “most accessible UIEM to date.” The ...

Astell&Kern and 64 Audio’s $3,000 XIO IEMs combine cutting-edge tech and luxury design for audiophiles seeking top-tier sound and craftsmanship. Astell&Kern and 64 Audio are finally dropping their ...

What happens when two elite hi-fi brands team up to create an elite pair of in-ear monitors? You get the XIO. They are the joint creation between Astell&Kern, arguably the biggest name in portable ...

Astell & Kern and 64 Audio have collaborated to create the XIO high-end IEMs, with ten drivers inside their stainless steel housing. They go on sale in August 2025 with a US price of $3,000; other ...