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Astell & Kern AK Jr Portable Lossless Digital Audio Player & DAC

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  • Compact and portable digital player offering high fidelity sound quality

  • Supports WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF and DSF music formats

  • High output and low impedance drives any earphone or headphone

  • External USB DAC functionality for PC and MAC

  • Internal memory and external microSD card slot offers 128GB storage capacity

Astell & Kern AK Jr Portable Lossless Digital Audio Player & DAC

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Astell & Kern AK Jr

Opening up the world of high resolution audio for the portable generation – Astell & Kern presents the AK Jr digital audio player with compact design that delivers the highest sound quality from lossless audio files. Fitting comfortably in your pocket, the AK Jr is like carrying a small concert with you.

With raised screen that provides secure grip and a slimmed down profile of 6.9mm, the AK Jr conveys a smartphone-like user experience to usually complex Hi-Fi audio features. Equipped with textured aluminium volume wheel the AK Jr offers smooth one-handed operation for full control.

Able to drive any type of earphone or headphones the AK Jr benefits from its decreased impedance rating providing high fidelity without the demand of separate amplification. AK Jr supports DSD, the digital audio format widely considered to be the next-generation in high resolution audio.

When playing music stored on a computer, the AK Jr doubles as a USB DAC that delivers the same high level of audio quality while eliminating the need for a built-in sound card. Supporting microSD cards up to 64 GB, the AK Jr is capable of offering a whopping total storage capacity of 128 GB.

The starting point of music.


Astell & Kern AK Junior


Thin and Light
AK Jr gives everyone the opportunity to comfortably listen to high resolution audio, anytime and anywhere. With compact design the AK Jr delivers the highest sound quality while fitting comfortably in your pocket.

Increased Performance
Our engineers have reduced the output impedance to 2 Ohms for a significant gain in sound fidelity. As the AK Jr supports many various types of earphones and headphones, a separate amplifier is unnecessary.

DSD to PCM
Supports DSD, the digital audio format widely considered to be the next-generation in high resolution audio. Listen to a greater range of audio through DSD as the AK Jr converts 2.8MHz DSD files to PCM.

USB DAC
The AK Jr also functions as an external DAC (sound card) when connected to a PC or Mac via USB. When playing music stored on a computer, the AK Jr delivers the same high level of audio quality while eliminating the need for a built-in sound card.

Ample Storage
The AK Jr features 64GB of memory to store more music than ever before. Supporting microSD cards up to 64 GB, the AK Jr is capable of offering a total storage capacity of 128 GB.

Full Touch Screen
The smartphone-like full touch capabilities offer responsive interface and the larger screen displays more information.

 

Astell & Kern AK Junior

FEATURES

  • Compact and portable digital player offering high fidelity sound quality
  • Supports WAV, FLAC, WMA, MP3, OGG, APE (Normal, High, Fast), AAC, ALAC, AIFF, DFF and DSF music formats
  • Increased output and lowered impedance drives any earphone or headphone
  • Converts 2.8MHz DSD files to PCM
  • External USB DAC (sound card) functionality for PC/MAC
  • Internal memory and external microSD card slot offers 128GB storage capacity
  • Smartphone-like full touch capabilities with highly responsive interface
  • Elevated screen provides secure grip and slims down profile
  • Generous screen size displays album covers in 1:1 aspect
  • Full aluminium body and textured aluminium volume wheel
 

Astell & Kern AK Junior


TECHNICAL SPECIFICATIONS

General

  • Supported Audio Formats: WAV, FLAC, WMA, MP3, OGG, APE(Normal, High, Fast), AAC, ALAC, AIFF, DFF, DSF
  • Sample rate: FLAC, WAV, ALAC, AIFF : 8kHz - 192kHz (8/16/24bits per Sample) / DSD : DSD64 (1bit 2.8MHz), Stereo (DSD to PCM)
  • Output Level: 1.95Vrms
  • DAC: Wolfson WM8740 (Single DAC)
  • Decoding: Support up to 24bit/192kHz Bit to Bit Decoding
  • Clock Jitter: 50ps (Typ)
  • Input: USB Micro-B input (charging and data transfer) / Connection Mode : UMS (USB Mass Storage)
  • Outputs: 3.5mm
  • Bluetooth: V4.0
  • Built-in Memory: 64GB [NAND]
  • External Memory: microSD (Max 64GB)
  • Display: 3.1inch WQVGA (240 x 400) Touchscreen
  • Battery Capacity: 1,450mAh 3.7V Li-Polymer Battery
  • Supported OS: Windows XP, Windows 7,8 (32/64bit), MAC OS X 10.7 and up
  • Dimensions: 52.9mm x 117mm x 8.9mm
  • Weight: 93g
  • Feature Enhancements: Firmware upgrades supported (F/W file copy)

Audio Performance

  • Frequency Response: ±0.04dB (Condition: 20Hz-20kHz) / ±0.3dB (Condition: 20Hz-70kHz)
  • Signal to Noise Ratio: 112dB @ 1kHz
  • Crosstalk: 120dB @ 1kHz
  • THD+N: 0.005% @ 1kHz
  • IMD SMPTE: 0.0006% 800Hz – 10kHz (4:1)
  • Output Impedance: 2ohm
 

PACKAGE INCLUDES

  • Astell & Kern AK Jr Digital Audio Player
  • USB-A to USB-Micro B cable
  • Set of Screen Protectors
BrandAstell & Kern
Product TypePortable Audio Player
ColourSilver
Feature KeywordPortable, Rechargeable
Recommended UseDigital audio player, Portable audio system
Manufacturer Warranty2 Years
Included AccessoriesUSB-A to USB-Micro B cable, Set of Screen Protectors
Part NumberAKJNr
GTIN8809440330492

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Questions on Astell & Kern AK Jr Portable Lossless Digital Audio Player & DAC

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  • From Roger at 09/09/2015 22:16
    • Can the AK Jr be used with a Chord Hugo via the usb connection?
    • Hi Roger,

      The AK Jr will output only analogue audio via headphone or line-out, no data; the USB port is for charging only. The sound quality is very good and accurate, however.

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