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  • Astell&Kern PD20

Astell&Kern PD20

Personalized Digital Audio Player

  • First DAP with personalized sound via hearing test
  • 160-step EQ control through Sound Master Wheel
  • Triple AMP Class with real-time switching
  • Class A current control with High/Mid/Low modes
  • Proprietary ESA technology minimizes group delay
  • Advanced DAR processing
Regular price $2,021.00
Sale price $2,021.00 Regular price
Unit price

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Astell&Kern PD20

Astell&Kern PD20

Regular price $2,021.00
Sale price $2,021.00 Regular price
Unit price

Finding the sound that truly suits you is the first step toward the essence of music. PD20 is designed to guide you on that journey.

Through Personal Sound, you can create a sound signature tailored to your hearing, then precisely refine it to your taste using the Sound Master Wheel. An intuitive control that allows even the amplifier driving mode to be changed with a single touch. Now, music is not just something you listen to. It is something you shape.

Exceptional resolution and high-purity sound, ES9027PRO Quad-DAC

Designed with a singular focus on sound quality, PD20 adopts the ESS ES9027PRO DAC in a Quad-DAC configuration. Four DACs operate independently to minimize inter-channel interference and deliver precise signal separation. As a result, even the finest nuances in sound are revealed with greater clarity, creating a natural, analog-like presentation through clean, distortion-free layering.

Minimizing Group Delay with Proprietary ESA (Enhanced Signal Alignment) Technology

Through its in-house developed ESA (Enhanced Signal Alignment) technology, PD20 significantly improves one of the fundamental challenges in audio reproduction—group delay. ESA precisely aligns frequency signals so they arrive more uniformly, minimizing frequency distortion and enhancing clarity and cleanliness of sound.

TERATHON Alpha

To create the ultimate DAP unlike anything experienced before, we went beyond simply adopting the latest DACs and new specifications. We further evolved and applied TERATON ALPHA, Astell&Kern’s Ultimate Sound Solution, incorporating its advanced and innovative audio technologies.

Refined through continuous research, TERATON ALPHA represents Astell&Kern’s integrated audio engineering expertise. Through effective power noise reduction, efficient power consumption with stable amplification, and a precisely engineered audio output interface, it delivers sound that remains faithful to the original source.

Triple AMP Architecture

PD20 features three distinct amplifier classes, allowing you to directly choose both sonic character and driving performance.

Class A mode delivers rich, high-density sound with minimal signal distortion, expressing a smooth, analog-like texture.
Class AB mode offers excellent balance and efficiency, providing stable dynamics and articulate detail.
Hybrid mode combines the refined texture of Class A with the efficiency and power of Class AB, creating a new level of sonic balance.

Adjustable Class-A Current

In Class A and Hybrid modes, the amplifier current can be adjusted in three levels: High / Mid / Low.
AMP Current adjustment goes beyond simple output control. It precisely fine-tunes the energy density and driving behavior of the amplifier, allowing you to further refine sound quality according to the characteristics of your earphones or headphones.

PD20 delivers optimal sound tailored to your individual hearing.

A One-of-a-Kind Sound Tuned to Your Hearing

Developed in collaboration with global audio solution leader Audiodo, Personal Sound is used in a DAP for the first time, creating a personalized profile exclusively for you and redefining how you experience sound. By precisely analyzing your hearing characteristics and independently compensating for left and right ears, it dramatically enhances clarity and balance. Regardless of genre, volume level, or the headphones or IEMs you use, you can enjoy a consistently optimized listening experience.

With a simple hearing test, your personal listening experience is complete.

PD20 delivers optimal sound tailored to your individual hearing.

Audiodo Audiosphere: Immersive Spatial Sound from Any Stereo Source

Audiosphere goes beyond conventional stereo, delivering a powerful sense of spatial immersion. It expands two-channel audio into a virtual three-dimensional sound field and offers four presets: Subtle, Balanced, Immersive, and Echoic.

From the expansive resonance of orchestral performances to the realism of video content, you can select the sound atmosphere that best suits your listening preference.

Sound Design Shaped by DAC Filters

Design your own sound style with seven DAC filters.

Filter
 
Description
 
Impulse Response
  • Minimum phase (Default) Low latency with minimized ringing and reduced ripple in the passband. wave
  • Linear Phase Apodizing Designed to prevent aliasing, this filter offers improved overall imaging and a natural roll-off beyond the 20 kHz range. wave
  • Linear Phase Fast Roll-Off Delivers clean transient response and high resolution, particularly suitable for music with strong transients. A widely used filter that provides a bright and clear high-frequency range. wave
  • Linear Phase Slow Roll-Off Features low group delay and symmetrical impulse response with minimal ringing. Compared to LPFR, it offers a gentler roll-off and a cleaner high-frequency presentation. wave
  • Minimum Phase Fast Roll-Off Minimizes pre-ringing, making it well suited for video and studio use. Free from aliasing within the audible range, it delivers a more powerful low-frequency response and clean highs compared to Linear Phase filters. wave
  • Minimum Phase Slow Roll-Off Eliminates symmetrical filtering to further reduce pre-ringing. Provides a low-frequency range with strong extension and excellent transient response. wave
  • Minimum Phase Slow Roll-Off Low Dispersion Combines low latency of minimum phase filtering with reduced dispersion of linear phase filters. Minimizes pre-ringing to achieve a well-balanced response and low dispersion across the audio band. wave

Audiodo Equalizer: Effortless, Intuitive EQ Control

Audiodo’s Equalizer offers intuitive control centered on Bass, Mid, and Treble. Working in harmony with the Personal Sound profile, it operates on an already corrected sound foundation, ensuring stable and consistent performance.

With the Tilting function, you can naturally adjust the overall tonal balance toward either the low or high frequencies, while preserving the original sound character.

Sound Master Wheel, Crafting Your Own Sound in 160 Steps

The Sound Master Wheel, a key design element of the PD20, is seamlessly integrated with the Audiodo equalizer.
Each band—Bass, Mid, and Treble—can be finely adjusted across 160 steps, from –8.0 dB to +8.0 dB, allowing even the most subtle preferences to be precisely reflected in your sound.

Without interrupting your music, you can shape and refine the sound purely through the tactile feel of the wheel.

Specifications

General Information

  • PD20

  • Silver

  • Aluminum

  • 6inch 2160 x 1080 Touch screen

  • Octa-Core

  • ESS ES9027PRO x4 (Quad-DAC)

  • Support up to 32bit / 768kHz Bit to Bit playback

  • 77.5mm × 155.7mm × 17.3mm (3.05" × 6.12" × 0.68")

  • about 313g (11.04oz)

  • 0℃ ~ + 40℃ (32℉~ 104℉)

Audio Formats & Sample Rates

  • WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF

  • 8kHz ~ 768kHz (8/16/24/32bits per Sample)

  • DSD64 (2.8MHz), DSD128 (5.6MHz), DSD256 (11.2MHz), DSD512 (22.4MHz)

Inputs & Outputs

  • USB Type-C (Charging & PC & MAC)

  • 3.5mm, Optical Out (3.5mm)

  • 4.4mm (5-pole only supported)

  • Unbalanced 5Vrms │ Balanced 10Vrms

Wireless Connectivity

  • 802.11 a/b/g/n/ac (2.4/5GHz)

  • V5.3, aptX HD, LDAC, LHDC, SBC, AAC

Audio Performance (Class AB)

  • Unbalanced: ±0.005dB │ Balanced: ±0.010dB

  • Unbalanced: ±0.020dB │ Balanced: ±0.020dB

  • 124dB @ 1kHz (Unbalanced) │ 127dB @ 1kHz (Balanced)

  • -133dB @ 1kHz (Unbalanced) │ -140dB @ 1kHz (Balanced)

  • 0.0003% @ 1kHz (Unbalanced) │ 0.0004% @ 1kHz (Balanced)

  • 0.0006% 800Hz 10kHz (4:1) Unbalanced/Balanced

  • Unbalanced 3.5mm (0.7Ω) │ Balanced 4.4mm (1.7Ω)

Clock & Timing

  • 25pS (Typ.)

  • 250 Femto Seconds

Storage

  • 256GB NAND

  • microSD x1 (Max. 2TB)

Battery

  • 5,770mAh 3.8V Li-Polymer

  • about 4 hours (PD3.0 Charging)

  • about 14 hours (FLAC, 16bit, 44.1kHz)

Additional Features

  • Supported (OTA)

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