Astell&Kern PD5: a high-end portable music player for audiophiles who won't settle for smartphones

Astell&Kern has unveiled the PD5, a hi-fi portable music player aimed at audiophiles for whom a smartphone as an audio source is about as satisfying as drinking fine espresso from a paper cup. The new PD5 is proof that the niche market for high-quality dedicated audio players remains very much alive despite smartphone dominance.