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Astell & Kern AK Jr Digital Music & Media Player


Astell & Kern

Moon Audio

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The AK Jr allows you to comfortably listen to high resolution audio anywhere, anytime with it's thinner and lighter weight design compared to other AK models

Main Features:

  • Thin and light for portable use

  • Enjoy HiFi audio in a smartphone-like experience

  • Raised screen for secure grip

  • Full aluminum body & textured aluminum volume wheel

  • Increased power & lowered impedance

  • Converts DSD to PCM


  • Full touch screen

  • 64GB + 64GB microSD Memory

Android File Transfer - Move files from Apple Mac to AK Players



Thinner & Lighter

While Astell & Kern create portable audio devices, the relatively large size of previous AK models is less convenient for some. 

AK Jr is the solution to that problem. With its thinner and lighter weight design, AK Jr gives you to opportunity to comfortably listen to high res audio anywhere. 

The AK Jr is like carrying a small concert in your pocket.


Astell & Kern designed the AK Jr to simplify the complex features of HiFi audio into a smartphone-like experience.

The raised screen allows for easier 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.

Increased output and lowered impedance

The AK Jr's output level of 1.95 VRMS represents a 14% increase over the AK100's 1.5 VRMS. Astell & Kern engineers have reduced the output impedance to 2 Ohms for a significant gain in sound fidelity from the AK100’s 22 Ohms.

As the AK Jr supports many various types of earphones and headphones, a separate amplifier is unnecessary.


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 can also function 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.

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.

64GB + 64GB microSD Memory

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

The combined 128GB of internal memory and external microSD card capacity is capable of holding more than 1,250 high resolution audio. (Based on one, 4-minute song @ 24 bit/96 kHz, taking up 90MB)

AK Jr Instruction Manual


Have Additional Questions?

Find answers to common questions on our guides.



Additional Info


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