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T3
T3
Technology
Carrie Marshall

Astell & Kern and 64 Audio's new high-end IEMs deliver 10-driver delight

Astell Kern
The Astell & Kern XIO in-ear monitors sitting on a dark surface beside an Astell & Kern hi-res audio player.
Quick Summary

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 pricing hasn't been announced yet.

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 monitors, made for audiophiles and featuring some very impressive engineering.

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