Astell&Kern
PD20
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HiFi Editorial
Astell&Kern PD20 DAP Introduces Audiodo Personal Sound Hearing Calibration with Quad ESS ES9027PRO DACs
Astell&Kern PD20 is the first high-end DAP integrating Audiodo Personal Sound, performing independent left/right ear hearing analysis to create individualized playback profiles.
Included calibration earphones and an onboard hearing test measure frequency sensitivity, generating data-driven correction profiles instead of relying on fixed EQ presets.
Triple AMP architecture offers Class A, Class A/B, and Hybrid modes with real-time switching and adjustable bias current levels for precise headphone matching.