Thin and Light
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.
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CS4398
Single DAC -
24bit 192kHz
bit to bit play -
Balanced
Output -
USB Audio
(Digital Out) -
AK Connect
App -
Metal Body
(Aluminum) -
CD-RIPPER
(Support)
DSD to PCM
The AK Jr 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.
* The AK Jr converts 2.8 MHz DSD files to PCM.
Full Touch Screen
The AK Jr features a 3.1" LCD touchscreen that is about 1.4 times larger than the AK100’s LCD.
The smartphone-like full touch capabilities offer responsive interface and the larger screen
displays more information.
Album covers that are in a 4:3 format on the AK100 are now displayed 1:1 aspect on the AK Jr’s larger screen.
AK100 Music Playback Screen
AK Jr Music Playback Screen
64GB + microSD 256GB
The AK Jr features 64GB of memory to store more music than ever before. Supporting microSD cards up to 256GB, the AK Jr is capable of offering a whopping total storage capacity of 320GB!
The combined 320GB of internal memory and external microSD card capacity is capable of holding more than 3,125 high resolution audio. (Based on one, 4-minute song @ 24 bit/96 kHz, taking up 90MB)
DESIGN
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.
Specification
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General Specifications
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Model
AK Jr
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Body Color
Sleek Silver
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Body Material
Aluminum
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Display
3.1inch WQVGA (240 x 400) Touchscreen
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Supported Audio Formats
WAV, FLAC, WMA, MP3, OGG, APE(Normal, High, Fast), AAC, ALAC, AIFF, DFF, DSF
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Sample rate
FLAC, WAV, ALAC, AIFF : 8kHz ~ 192kHz (8/16/24bits per Sample) / DSD : DSD64 (1bit 2.8MHz), Stereo (DSD to PCM)
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Output Level
1.95Vrms
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DAC
Wolfson WM8740 x1 (Single DAC)
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Decoding
Support up to 24bit/192kHz Bit to Bit Decoding
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Input
USB Micro-B input(for charging & data transfer (PC & MAC)) / Connection Mode : UMS(USB Mass Storage)
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Outputs
PHONES (3.5mm)
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Dimensions
2.08” (52.9 mm) [W] x 4.60” (117 mm) [H] x 0.35” (8.9 mm) [D]
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Weight
3.28 oz (93 g)
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Feature Enhancements
Firmware upgrades supported (F/W file copy)
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Model
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Audio Performance
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Frequency Response
±0.04dB (Condition: 20Hz~20kHz) / ±0.3dB (Condition: 20Hz~70kHz)
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Signal to Noise Ratio
112dB @ 1kHz
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Crosstalk
120dB @ 1kHz
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THD+N
0.005% @ 1kHz
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IMD SMPTE
0.0006% 800Hz 10kHz(4:1)
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Output Impedance
2ohm
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Frequency Response
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Clock Source
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Clock Jitter
50ps (Typ)
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Clock Jitter
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Battery
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Capacity
1,450mAh 3.7V Li-Polymer Battery
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Capacity
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Memory
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Built-in Memory
64GB [NAND]
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External Memory
microSD (Max 256GB) x1
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Built-in Memory
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OS
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Supported OS
Windows XP, Windows 7,8 (32/64bit), MAC OS X 10.7 and up
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Supported OS
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Etc.
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- Audio was NOT muted during the measurement.
- The image/specification may be changed without notice to improve product performance and quality.
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Price
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Price
$ 499
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Price