Astell&Kern AK120 II

Astell&Kern_AK120IIAstell&Kern AK120 II

AK120 mk2 Next-Gen Evolution

Dual DAC meets Balanced Output
We added the CS4398 Dual DAC and the balanced output method with sound quality proven through our flagship model.
The AK120 2nd Generation provides the weighty sound through the CS4398 Dual DAC and the A-amp, while providing delicate melodies through the balanced output.
Unbalanced vs. Balanced Output
The unbalanced method is the most commonly used basic method which consists of “left and right signals + ground line”. This setup includes a ground line which blocks out external noises from the outside. However, since the ground line cannot block out all of the external noises completely, external noises can be mixed into the signals that are transmitted, which then result in changes to the sound. The longer the signals travel, the more external noises that will be mixed into the sound which is why it is used within a short distance of 1 to 2 meters. Unlike the unbalanced method, the balanced method has an additional cold signal to compliment the hot signal which reduces the external noises.
Supports DSD format up to 5.6MHz
We got familiarized with the DSD format because of the AK120. However, because of the limited hardware functionality, the AK120 could only support DSD up to 2.8MHz with PCM conversion / downsampling to 88.1kHz. Thanks to the advanced hardware functionality and the DSD to PCM software, we can now provide playback support of DSD upto 5.6MHz.
– DSD playback in 5.6MHz is supported after being converted/downsampled to 176KHz PCM.
MQS Streaming
With the AK120 2nd Generation, you can now skip the complicated process of searching for music files, connecting to the PC, and downloading the files to the player. Simply connect the AK120 2nd Generation to your music collection on your computer in the same network to download and/or stream music!
– “Astell&Kern MQS Streaming Server” software must be installed on your PC or MAC with a shared folder saved for MQS Streaming to work.
Full Touch Screen
We implemented a 3.31 inch AMOLED screen that is approximately 82% larger than the screen used in the original AK120. Users can access and see more information on the larger AMOLED screen. Classical music tracks that contrain titles that are too long to be displayed on screen, are now marked with two lines on the music list for easier navigation. The search function enables you to easily find the music you want to hear.
A more detailed 10-band/0.5dB step EQ
A more accurate EQ setting is featured by doubling the bands from 5 to 10 and halving the dB steps from 1dB to 0.5dB. With the user EQ settings, you can make custom EQ settings to fit each music genre and change them when desired.
128GB + microSD 128GB
The AK120 2nd Generation includes 128GB of internal flash storage.
With the addition of a 128GB microSD card, the AK120 2nd Generation supports up to a total memory of 256GB. With 128GB of internal memory, the AK120 2nd Generation can store about 1,250 MQS (24bit/96kHz, 4 minute-long, 90MB) songs.


AK120 II at a Glance


Earphones / Optical port : Output sound to connected earphones. Music can be played back on an SPDIF-capable external device by using an optical cable.

Power : Turn the screen on and off.

Long Press – Turn the device on and off.

Balanced port : Output sound to earphones or headphones that support balanced audio connections. Connect to an external audio device by using both the earphone port (ground) and balanced audio port (LR) in conjunction.

Micro-USB port : Connect to a computer or recharge the device.

Previous/Rewind : Play the previous song or restart the song. Long press – Rewind.

Play/Pause : Play or Pause a song.

Next/Fast Forward : Skip to the next song.

Long press – Fast Forward.

microSD card slot : Insert a microSD card and access its files.

Volume : Control the volume by turning the wheel.

LCD Touchscreen : Display with gesture control.

Home button : Show the Home Screen.


Body Material Aluminum
Display 3.31inch WVGA(480X800) AMOLED Touch Screen
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 Native : DSD64(1bit 2.8MHz), Stereo/ DSD128(1bit 5.6MHz), Stereo
Output Level Unbalance 2.1Vrms/ Balance 2.3Vrms(Condition No Load)
DAC Cirrus Logic CS4398 X 2(Dual DAC)
Decoding Support up to 24bit/ 192kHz Bit to Bit Decoding
Input USB Micro-B input(for charging & data transfer(PC&MAC)/ Connection Mode : MTP(Media Device)
Outputs PHONES(3.5mm)/ Optical Out(3.5mm)/ Balanced Out(2.5mm, only 4-pole supported)
Wi-Fi 802.11 b/g/n(2.4GHz)
Bluetooth V4.0
Dimensions 2.59″ (66mm)[W] X 4.21″ (107mm)[H] X0.68″ (17.5mm)[D]
Weight 6.5 oz(185g)
Feature Enhancements Firmware upgrade supported(OTA)

Audio Specification

Frequency Response ±0.023dB(Condition:20Hz~20kHz)Unbalance & Balance/±0.3dB(Conditon:10Hz~70kHz)Unbalance & Balance
S/N 116dB @ 1kHz, Unbalance/ 117dB @ 1kHz, Balance
Crosstalk 130dB @ 1KHz, Unbalance/ 135dB @ 1kHz, Balance
THD+N 0.0007% @ 1kHz, Unbalance/ 0.0005% @ 1kHz, Balance
IMD SMPTE 0.0004% 800Hz 10kHz(4:1) Unbalance/ 0.0003% 800Hz 10kHz(4:1) Balance
Output impedance 1 ohm
Clock Jitter 50ps(Typ)
Memory Built-in Memory : 128 GB[NAND] External Memory : rmcroSD(Max, 128GB) X 1
Battery Capacity : 3100 mAh 3.7 V Li-Polymer Battery
Supported OS Supported OS : Window XP, Window 7,8(32/64bit) MAC OS X 10.7
AK120_II_inside-1 AK120_II_inside-2 AK120_II_inside-3 AK120_II_inside-4 AK120_II_inside-5

Downloads AK120 II

No. Product Category
4 AK120 II Software&Driver MQS Streaming Server(MAC)
3 AK120 II Software&Driver MQS Streaming Server(Windows)
2 AK120 II Software&Driver MAC OS driver for filetransfer
1 AK120 II Manual AK120 II USER MANUAL(Eng.)