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Astell & Kern AK100 II Portable MQS Music Player


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The Astell&Kern AK100 II is latest incarnation of the popular AK100 and is the ultimate portable high-fidelity audio system. The AK100 II will enable you to feel the phenomenal realism of music at 24bit/192kHz high-resolution lossless Mastering Quality Sound that cannot be heard through CD standards. When compared to CDs, the high resolution 24Bit/192kHz music files used during the mastering process in studios contain 6.5 times the information, resulting in a more original, precise and enhanced sound.

When playing your ripped CD collection, you will be astonished at the audio quality through the AK100 II from either headphones or in your home Hi-Fi system. The AK100 II improves on the original AK100 by offering a native DSD and DSD to PCM capable Cirrus Logic DAC. It also comes bundled with a WiFi connection for MQS streaming, meaning that you can store all of your music externally and stream it to your portable player.

Storage of music - The single microSD card storage slots can take any capacity up to 128GB. This means the total music storage in the AK100II can be increased for music on the go. These tiny cards are also a great way to carry around your entire music library, taking up so little space. The maximum capacity of the AK100 II is now 192GB.



  • Model - AK100Ⅱ
  • Body Color - Smoky Blue
  • Body Material - Aluminum
  • Display - 3.31inch WVGA (480 x 800) AMOLED 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 Native : DSD64 (1bit 2.8MHz), Stereo / DSD128 (1bit 5.6MHz), Stereo
  • Output Level - Unbalance 2.0Vrms / Balance 1.7Vrms (Condition No Load)
  • DAC - Cirrus Logic CS4398 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 : 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 - 2.16 ”(55 mm) [W] x 4.37 ”(111 mm) [H] x 0.58 ”(14.9 mm) [D]
  • Weight - 5.99 oz (170 g)
  • Feature Enhancements - Firmware upgrades supported (OTA)


Technical Specifications

  • Frequency Response
  • Signal to Noise Ratio
  • Crosstalk
  • THD+N
  • Output Impedance
  • ±0.025dB (Condition: 20Hz~20kHz) Unbalance & Balance
    / ±0.6dB (Condition: 10Hz~70kHz) Unbalance & Balance
  • 115dB @ 1kHz, Unbalance / 115dB @ 1kHz, Balance
  • 127dB @ 1kHz, Unbalance / 130dB @ 1kHz, Balance
  • 0.0009% @ 1kHz, Unbalance / 0.0008% @ 1kHz, Balance
  • 0.0004% 800Hz 10kHz(4:1) Unbalance / 0.0003% 800Hz 10kHz(4:1) Balance
  • Balanced out 2.5mm (1ohm) / PHONES 3.5mm (2ohm)
  • Clock Jitter
  • 50ps (Typ)
  • Capacity
  • 3,150mAh 3.7V Li-Polymer Battery
  • Built-in Memory
  • External Memory
  • 64GB [NAND]
  • microSD (Max 128GB) x1
  • Supported OS
  • Windows XP, Windows 7,8 (32/64bit), MAC OS X 10.7 and up



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Astell and Kern