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Astell & Kern AK120 II

High Resolution Dual DAC Music Player
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Astell & Kern AK120 II Details

iriver Astell & Kern AK120 II: The portable Hi-Fi audio system with TWO 24/192 DACs!

  • Equipped with two (one for each channel) Cirrus Logic CS4398 24-bit, 192kHz DACs
  • Can be used as an external optical DAC
  • Wirelessly streams WAV, FLAC, WMA, MP3, OGG, APE, AAC, DFF, DSF files 5.6 MHz DSD Support
  • Touch equalizer (EQ) is easily manipulated by the fingertips
  • Sleek aluminum body
  • Dual microSD memory card slots (64MB each) and 64GB of built-in internal memory gives you total storage of 192MB
  • A user interface with an analog feel
“High resolution albums can be mind-boggling on this player, as well. This is a special treat for me. Usually, as a matter of circumstance, I can only listen to my High Res stuff on my desktop or laptop systems. The AK has spoiled me now, making this part of my library portable and allowing me the chance to swim in the music I’ve collected from various high resolution sources.”
    — Chris Sommovigo, Headphone.guru

The Astell & Kern AK120 II Portable High resolution Music Player is a pocket-sized audio system capable of studio Mastering Quality Sound (MQS) support and playback. MQS is a high-resolution digital music format that delivers distortion-free sound without data loss by operating at 24 bits and sampling at a rate from 96 to 192 kHz. MQS sources are commonly saved as a lossless 24-bit WAV or FLAC files during mastering. The AK120 II also supports 5.6 MHz DSD playback by converting/downsampling to 176 kHz PCM.

The AK120 II has an integrated dual-channel Cirrus Logic CS4398 Digital-to-Analog Converter and balanced output for truly advanced sound quality. It can also be used as an external DAC when connected to a Mac or PC via USB. It can also serve as a DAC for a CD player or other digital device via optical connection.

The 3.3-inch AMOLED touchscreen provides smartphone-style control over playback, while the brushed aluminum body and volume wheel provide a smooth analog feel. The built-in battery recharges via USB and lasts for up to 12 hours of playback. The AK120 II ships with a protective case and micro-USB cable.

MQS streaming
You’ll be able to wirelessly download and stream music from your Mac or PC via a Wi-Fi network, and firmware updates are available immediately. (For MSQ streaming, the Astell & Kern MQS Streaming Server software must be installed on your PC or Mac with a shared folder.)

256GB storage space
Save high-definition lossless music to the 128GB internal flash memory or to the MicroSD card slot supporting 128GB for expanded storage, allowing you to store a maximum of 256GB of high definition lossless music

Built-in rechargeable battery
The built-in rechargeable lithium-polymer battery has a capacity of 3,150mAh and can be recharged via USB. Listen continuously for up to 12 hours on a charge

High Output Impedance
Headphone Output: up to 2 ohms
Balanced Output: 1 ohm

10-Band EQ
You’ll enjoy extended frequency control with a 10-band graphic EQ in .5 dB increments. In addition, multiple user EQs are supported so that users may create custom EQs to fit each music genre and change them whenever desired.

Additional Information

Name Astell & Kern AK120 II
Sub Title High Resolution Dual DAC Music Player
Manufacturer Astell & Kern
Manufacturer Part# AK120MKII

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  • Body color: Stone silver
  • 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 : DSD64 (1bit 2.8MHz), Stereo / DSD128 (1bit 5.6MHz), Stereo
  • Output level: Unbalance 2.1Vrms / Balance 2.3Vrms (Condition no load)
  • Cirrus logic CS4398 x2 (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 (H x W x D): 4.64" x 2.16" x 0.58"
  • Audio performance: ±0.023dB (Condition: 20Hz~20kHz) Unbalance & Balance
  • Frequency response: / ±0.3dB (Condition: 10Hz~70kHz) Unbalance & Balance
  • Signal to Noise Ratio: 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: Balanced out 2.5mm (1ohm) / PHONES 3.5mm (2ohm)