| Astell&Kern PD20 Digital Audio Player Specifications | |
| General Specifications | |
| Model | PD20 |
| Body Color | Silver |
| Body Material | Aluminum |
| Display | 6-inch 2160 x 1080 Touchscreen |
| Supported Audio Formats | WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF |
| Sample Rate (PCM) | 8kHz ~ 768kHz (8/16/24/32bit per sample) |
| DSD Support |
DSD64 (1bit 2.8MHz), Stereo DSD128 (1bit 5.6MHz), Stereo DSD256 (1bit 11.2MHz), Stereo DSD512 (1bit 22.4MHz), Stereo |
| Output Level | Unbalanced: 5Vrms │ Balanced: 10Vrms (No Load) |
| CPU | Octa-Core |
| DAC | ESS ES9027PRO x4 (Quad-DAC) |
| Decoding Support | Up to 32bit / 768kHz Bit-to-Bit Playback |
| Input | USB Type-C (Charging / PC / Mac) |
| Outputs |
3.5mm Unbalanced / Optical 4.4mm Balanced (5-pole supported) |
| Wi-Fi | 802.11 a/b/g/n/ac (2.4/5GHz) |
| Bluetooth | V5.3 (A2DP, AVRCP, aptX™ HD, LDAC, LHDC, SBC, AAC) |
| Dimensions | 77.5mm (W) x 155.7mm (H) x 17.3mm (D) |
| Weight | 313g (11.04oz) |
| Firmware | OTA Upgrade Supported |
| Operating Temperature | 0℃ ~ +40℃ (32℉ ~ 104℉) |
| Audio Specifications | |
| Frequency Response |
±0.005dB (20Hz~20kHz) Unbalanced ±0.010dB (20Hz~20kHz) Balanced ±0.020dB (20Hz~70kHz) Unbalanced & Balanced |
| Signal-to-Noise Ratio | 124dB @1kHz (Unbalanced) │ 127dB @1kHz (Balanced) |
| Crosstalk | -133dB @1kHz (Unbalanced) │ -140dB @1kHz (Balanced) |
| THD+N | 0.0003% @1kHz (Unbalanced) │ 0.0004% @1kHz (Balanced) |
| IMD (SMPTE) | 0.0006% 800Hz / 10kHz (4:1) |
| Output Impedance | 3.5mm: 0.7Ω │ 4.4mm: 1.7Ω |
| Clock | |
| Clock Jitter | 25pS (Typ.) |
| Reference Clock Jitter | 250 Femto Seconds |
| Storage | |
| Built-in Memory | 256GB (NAND) |
| External Memory | microSD x1 (Up to 2TB) |
| Battery | |
| Capacity | 5,770mAh 3.8V Li-Polymer |
| Charge Time | Approx. 4 Hours (PD3.0 Charging) |
| Playback Time | Approx. 14 Hours (FLAC 16bit/44.1kHz, Vol.50, Class AB, LCD Off) |
| Supported OS | |
| Operating System Compatibility | Windows 8/10/11 (32/64bit), macOS X 10.7+ |