Astell & Kern AK-Jr portable High Definition Music Player

If you can find this product for sale in the UK at a lower price we will match it. The comparable product must be identical in spec, readily available from a UK dealer and available within the same timescales as we are offering. We offer genuine products intended for sale within the UK, not Grey imports as such the comparable product must not be a grey import.

Astell & Kern AK-Jr
Astell & Kern AK-JrAstell & Kern AK-JrAstell & Kern AK-JrAstell & Kern AK-JrAstell & Kern AK-Jr



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The AK Jr project gives everyone the opportunity to comfortably listen to high resolution audio, anytime and anywhere. Although the Astell&Kern was a portable device, its relatively large size made it less convenient for some. The AK Jr’s compact design delivers the highest sound quality while fitting comfortably in your pocket.
The AK Jr is like carrying a small concert in your pocket.

(Headphones not included)

Product Description

The AK-Jr simplifies complex features of Hi-Fi audio to a smartphone-like experience.
The simplified design exemplifies the original concept of the AK-Jr.

The raised screen provides secure grip and slims down the profile from 8.9mm to 6.9mm. The full aluminum body and textured aluminum volume wheel allows smooth one-handed operation.

General Specifications
Model              AK-Jr
Body Color      Sleek Silver
Body Material  Aluminum
Display            3.1inch WQVGA (240 x 400) Touchscreen
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 x1 (Single DAC)
Decoding         Support up to 24bit/192kHz Bit to Bit Decoding
Input                USB Micro-B input(for charging & data transfer (PC & MAC)) / Connection Mode : UMS(USB Mass Storage)
Output             PHONES (3.5mm)
Bluetooth         V4.0 (A2DP, AVRCP)
Dimensions     2.08” (52.9 mm) [W] x 4.60” (117 mm) [H] x 0.35” (8.9 mm) [D]
Weight             3.28 oz (93 g)
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
Clock source
Clock Jitter                   50ps (Typ)
Capacity                       1,450mAh 3.7V Li-Polymer Battery
Built-in Memory             64GB [NAND]
External Memory           microSD (Max 256GB) x1
Supported OS               Windows XP, Windows 7,8 (32/64bit), MAC OS X 10.7 and up