The new PD20 from Astell&Kern is billed as the first Digital Audio Player to tailor sound to a listener's hearing – transforming how music is individually experienced.

While TVs have become better and better over the past 15 years, audio has taken several steps backwards. Many of us have sacrificed fidelity in pursuit of convenience and portability, adopting ...

Forbes contributors publish independent expert analyses and insights. Technology journalist specializing in audio, computing and Apple Macs. This voice experience is generated by AI. Learn more. This ...