Astell & Kern A&ultima SP4000 Portable High-Resolution Digital Audio Player Color:Silver neutral – in the word's

neutral – in the word's best sense

56mm Ring Radiator dynamic transducer system

This results in the reproduction of the tiniest details

Kinera’s customized BA 30095 driver produces the well extended

to be applied to in-ear monitors

Astell & Kern A&ultima SP4000 Portable High-Resolution Digital Audio Player Color:Silver neutral – in the word'sSP4000 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