That’s not what these high-end players are to me, and the SP4000 is a testament to that with its jewel-like architecture.

The concept of a portable digital audio player (DAP) goes back to 1979, the beginning of the bits- and-bytes era of music recording. At the time, all such devices—like most digitally recorded music of ...

Astell&Kern is preparing to launch a new flagship Hi-Res Audio player, the A&Ultima SP4000. It comes with several significant upgrades that make it the brand's most advanced personal audio player yet, ...

Nearly three years after Astell&Kern released its last flagship portable hi-fi player, the A&ultima SP3000, the company has revealed a new-and-improved model. While the upcoming A&ultima SP4000 looks ...

Astell & Kern is one of the biggest names in portable hi-fi, best known for its gorgeous yet expensive lines of digital audio players (or DAPs) that let audiophiles listen to true lossless audio on ...