Description
Astell&Kern PD5
The Astell&Kern PD5 is a brilliant entry-level to the world of Astell&Kern, the worlds premium manufacturer of personal digital audio players. The Astell&Kern PD5 replaces the legendary SR35 and improves upon it in all areas of performance.
Engineered for effortless portability, it 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.
- Octa-DAC (Switchable Quad / 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
Longer, More Convenient Listening: Up to 28 Hours of Continuous Playback
Offering up to 28 hours of continuous playback, it 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.
Smart Sound that Understands Your Environment, EnviroTune
A blend of ‘Environment’ and ‘Tune,’ EnviroTune is an intelligent sound-tuning technology that analyses listening surroundings in real time to restore musical details easily lost to ambient noise.
The built-in microphone detects changes in ambient noise in real time, analysing input sound by frequency band to automatically compensate for frequencies masked by noise.
Without unnecessarily raising the volume, the sound continuously adapts to your environment—allowing complete immersion in the original detail of your music, anywhere, anytime.
Minimising Group Delay with Proprietary ESA (Enhanced Signal Alignment) Technology
The PD5 drastically improves group delay—a chronic issue in audio systems—through proprietary ESA (Enhanced Signal Alignment) technology.
By aligning frequency signals to arrive with greater uniformity, ESA minimises frequency distortion and elevates sound quality to be clearer and more pristine.
To deliver the ultimate DAP experience like never before, we incorporated the latest DACs and upgraded specifications, while further advancing TERATON ALPHA—Astell&Kern’s Ultimate Sound Solution.
Perfected through relentless research, TERATON ALPHA is Astell&Kern’s proprietary audio technology designed to deliver sound closest to the original source through effective power noise removal, efficient power consumption, unwavering amplification, and a seamlessly converted audio output interface.
Perfect Fit. Natural Feel
It may look like an ordinary case at first glance, but no detail was overlooked.
Designed to seamlessly complement the PD5, this case is crafted in South Korea using premium TPU raw materials from Covestro, Germany.
The soft, flexible material provides a snug, seamless fit with comfortable button feedback and reliable protection. Its high transparency preserves the original beauty of the device’s design.
While TPU naturally discolours over time, a special UV stabiliser is applied to slow down discoloration and keep the case looking clear and clean for longer.
DESIGN
The design concept of the PD5 is ‘Grip Control.’ It embodies lightweight portability to seamlessly accompany you anywhere, alongside the sleek, minimalist design identity defining the PD lineup.
Featuring a perfectly balanced feel in hand and a compact form factor, it delivers exceptional grip. The curved 4.1-inch display optimized for DAP usage offers effortless readability and tactile control, even during long listening sessions.
At the top, the microphone for EnviroTune and the power button are symmetrically arranged to achieve balanced aesthetic harmony—integrating functional elements into a single refined structure.
Effortless to carry and designed for daily enjoyment, the PD5 is lifestyle audio made to bring hi-fi DAP listening seamlessly into your everyday life.
Specifications : Astell&Kern PD5
- Model :PD5
- Body Colour: Silver
- Body Material: Aluminium
- 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℉)



David A. (verified owner) –
Excellent service, excellent product. First class service from Richard and Audiologica as always. The PD5 is certainly step forward from the SR35 which it replaces. Better screen and software for downloading the streaming services you want to use whilst avoiding bloatware. Upgraded chip makes the experience quicker ( a major downside on the SR35 for me). Build and sound quality remain excellent. The Octa DAC adds further depth although the Quad remains excellent. Sound quality, for the price , is up there with the best. A worthy upgrade and successor to a firm A & K favourite.