Astell & Kern A&ultima SP4000 Portable High-Resolution Digital Audio Player Color:Silver This results in the reproduction

This results in the reproduction of the tiniest details

neutral – in the word's best sense

to be applied to in-ear monitors

High-performance Qualcomm Snapdragon CPU

Length: 2m (~6

Astell & Kern A&ultima SP4000 Portable High-Resolution Digital Audio Player Color:Silver This results in the reproductionSP4000 Built on Legacy, Evolving Perfection The A&ultima SP4000 is Astell&Kern's newest flagship digital audio player, the result of three years of relentless research and innovation following the development of the SP3000. As part of the A&ultima series Astell&Kern's flagship lineup combining cutting edge technology and top tier specifications the SP4000 surpasses the boundaries set by the SP3000, once regarded as the ultimate reference. Built upon