Astell&Kern A&ultima PD5 Digital Audio Player

A&ultima PD5 Digital Audio Player, by Astell&Kern.

Compact in Form, Infinite in Sound - Engineered for effortless portability, PD5 delivers music with total freedom and comfort—without ever compromising on performance or sound quality.

Designed to fit comfortably in one hand, the PD5 combines a compact form factor with all-day battery life. Going far beyond the physical limits of its size, it delivers Astell&Kern’s signature deep, detailed, and rich sound.

Achieving the perfect harmony between portability and high performance, the PD5 brings the ultimate audio experience into your everyday life.

Engineered with an Octa-DAC architecture, it delivers extraordinary audio fidelity—without sacrificing power or precision.

Powered by eight CS43198 DACs, the PD5 achieves an expansive dynamic range with exceptional channel separation. Going far beyond conventional signal processing, it unveils the purest sound, capturing even the most subtle musical nuances.

Unlocking up to 8Vrms of output to effortlessly drive any headphone, the PD5 brings Astell&Kern’s true signature sound into complete perfection.

Dual Drive Mode allows users to select the optimal DAC configuration for any listening environment or preference. Discover the ideal balance between performance and power efficiency.

Offering up to 28 hours of continuous playback, PD5 allows complete immersion in music without worrying about battery life. Stay focused purely on your sound with a single charge—from long commutes to travel, and all the way until bedtime.

Weighing approximately 200g with a curved 4.1-inch display that fits naturally in the hand, it delivers exceptional portability and a comfortable grip for effortless listening over extended periods.

Features

• Successor to the award-winning SR35 entry-level A&K model
• Octa-DAC (Switchable between Quad-DAC / Octa-DAC)
• Up to 28 Hours of Continuous Playback
• EnviroTune - Analyzes ambient noise to automatically deliver optimal sound
• Compact Design that fits perfectly in one hand
• Crossfeed - A Speaker-Like Experience via Headphones
• Automatic Volume Adjustment with ReplayGain
• TERATON ALPHA Technology
• Proprietary ESA (Enhanced Signal Alignment) Technology
• Dual-Band Wi-Fi (2.4/5GHz)
• Wireless Hi-Fi Sound via BT Sink
• Roon Ready + Qoboz Connect Support

Specifications

• Model: PD5
• Body Color: Silver
• Body Material: Aluminum
• Display: 4.1inch 720 x 1280 Touch screen
• Supported Audio Formats: WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF
• Sample rate: PCM : 8kHz ~ 384kHz (8/16/24/32bits per Sample)
• DSD Native: DSD64(1bit 2.8MHz), Stereo / DSD128(1bit 5.6MHz), Stereo / DSD256(1bit 11.2MHz), Stereo
• Output Level: [Quad] Unbalanced 3Vrms │ Balanced 6Vrms (Condition No Load) / [Octa] Unbalanced 4Vrms │ Balanced 8Vrms (Condition No Load)
• CPU: Octa-Core
• DAC: Cirrus Logic CS43198 x8 (Octa-DAC)
• Decoding: Support up to 32bit / 384kHz Bit to Bit playback
• Input: USB Type-C input (for Charging & PC & MAC)
• Outputs: Unbalanced Out (3.5mm), Balanced Out (4.4m, only 5-pole supported)
• Wi-Fi: 802.11 a/b/g/n/ac (2.4/5GHz)
• Bluetooth: V5.3 (A2DP, AVRCP, Qualcomm® aptX™ HD, LDAC, LHDC, SBC, AAC)
• Dimensions: 2.74” (69.7mm)[W] x 4.71” (119.7mm)[H] x 0.63” (16.1mm)[D]
• Weight: about 6.98oz (198g)
• Feature Enhancements: Firmware upgrade supported (OTA)
• Operating Temperature: 0℃ ~ + 40℃ (32℉~ 104℉)
• Frequency Response: ±0.011dB (Condition: 20Hz~20kHz) Unbalanced │ ±0.011dB (Condition: 20Hz~20kHz) Balanced / ±0.130dB (Condition: 20Hz~70kHz) Unbalanced │ ±0.143dB (Condition: 20Hz~70kHz) Balanced
• S/N: 125dB @ 1kHz, Unbalanced │ 129dB @ 1kHz, Balanced
• Crosstalk: -145dB @ 1kHz, Unbalanced │ -147dB @ 1kHz, Balanced
• THD+N: 0.0006% @ 1kHz, Unbalanced │ 0.0006% @ 1kHz, Balanced
• IMD SMPTE: 0.0003% 800Hz 10kHz (4:1) Unbalanced │ 0.0001% 800Hz 10kHz (4:1) Balanced
• Output Impedance: Unbalanced Out 3.5mm (0.6ohm) │ Balanced Out 4.4mm (1.2ohm)
• Clock Jitter: 25pS (Typ)
• Reference Clock Jitter: 250 Femto Seconds
• Built-in Memory: 64GB [NAND]
• External Memory: microSD x1 (Max. 1.5TB)
• Capacity: 4,000mAh 3.8V Li-Polymer
• Charge Time: about 2.5 hours (PD3.0 Charging)
• Playback Time: about 28 hours (Standard: FLAC, 16bit, 44.1kHz, Vol.50, Quad-DAC, LCD Off)
• Supported OS: Windows 8,10,11(32/64bit) MAC OS X 10.7

Included

• 1 x A&ultima PD5 Digital Audio PLayer
• 1 x Protective Case
• 1 x Documentation

More Information

• PD5 Digital Audio Player, by Astell&Kern