Astell & Kern AK100 II | 64GB Portable MQS Hi-Fi Audio System

$899.00

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Astell and Kern

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Details & Highlights

Product Highlights

    A New Standard
    We recognized that certain aspects of the AK100 needed improvement during research and development for a successor. While considering how to improve the AK100, we realized that there was a difference between measured audio specifications and what we felt sounded good. After much deliberation, our development efforts were focused on making the AK100 2nd Generation "feel" right to our senses rather than mechanically boosting technical specs. The original AK100 was developed according to audio specification standards, but development of the next–generation AK100 was developed to the "New Standard" of how the music sounds.

Details from Astell and Kern

    Single DAC and Balanced Out
    Although the dramatic depth in sound quality delivered by the Balanced Out was proven in our flagship model, we wondered if the same benefit could be gained by implementing the Balanced Out with a Single DAC. The newly designed demo board delivered the ear–pleasing sound quality we needed. The value of a Balanced Out with a Single DAC is confirmed with every musical note.

    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.

    5.6 MHz DSD Support
    We realized DSD playback through a firmware upgrade for the AK100. However, only 2.8 MHz DSD was supported (88.1kHz PCM conversion/downsampling) due to hardware limitations. Now, 5.6 MHz DSD is supported via 'DSD to PCM' by utilizing a Dual Core CPU.

    USB DAC
    The AK100 2nd Generation also functions as an external DAC (sound card) when connected to a PC or Mac via USB. The AK100 2nd Generation's sound quality is available for stored music on any PC or Mac as it serves as a built–in sound card.

    MQS Streaming
    With the next–generation AK100, it's no longer necessary to turn on the PC, search for music, connect a device, and transfer files. Simply connect the AK100 2nd Generation to your PC or Mac via Wi–Fi on the same network and download or stream music wirelessly.

    OTA (Over–The–Air) Upgrade
    It has been 14 years since iriver has used the term: firmware. It already has been 14 years since when our customers had to check their email or look for notifications on the iriver website to look for new firmware. Now, as long as you are connected to Wi–Fi, we notify you of firmware updates as soon as they launch and from wherever you are.

    Full Touch Screen
    The new AK100 2nd Generation utilizes a 3.31" AMOLED screen, an 82% increase over the previous screen's size. Now, users have access to more on–screen information than ever before. In addition, a full touchscreen means convenient, smartphone–style control. The Album View screen has been completely overhauled. The larger screen offers a view of six albums compared to the previous version's four, and the album art view offers intuitive search functionality.

    A More Detailed 10–Band 0.5 dB Step EQ
    A more accurate EQ setting is available by doubling the bands (from 5 to 10) and halving the dB steps (from 1 dB to 0.5 dB). In addition, multiple user EQs are supported so that users may create custom EQs to fit each music genre and change them whenever desired.

    64GB + microSD 128GB
    The AK100 2nd Generation includes 64GB of internal flash storage. With the addition of a 128GB microSD card, the AK100 2nd Generation supports up to a total memory of 192GB. With 64GB of internal memory, the AK120 2nd Generation can store about 625 MQS (24bit/96kHz, 4 minute–long, 90MB) songs.

Reviews

Features & Specs

OID
    1483605
UPC
    821566014177
Manufacturer's Warranty
    1 Year Limited Warranty
Detailed Specifications
    General Specifications
  • Model: AK100 II
  • 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 : 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)

  • Audio Performance
  • Frequency Response: ±0.025dB (Condition: 20Hz~20kHz) Unbalance & Balance / ±0.6dB (Condition: 10Hz~70kHz) Unbalance & Balance
  • Signal to Noise Ratio: 115dB @ 1kHz, Unbalance / 115dB @ 1kHz, Balance
  • Crosstalk: 127dB @ 1kHz, Unbalance / 130dB @ 1kHz, Balance
  • THD+N: 0.0009% @ 1kHz, Unbalance / 0.0008% @ 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)

  • Clock source
  • Clock Jitter: 50ps (Typ)

  • Battery
  • Capacity: 3,150mAh 3.7V Li–Polymer Battery

  • Memory
  • Built–in Memory: 64GB [NAND]
  • External Memory: microSD (Max 128GB) x1

  • OS
  • Supported OS: Windows XP, Windows 7,8 (32/64bit), MAC OS X 10.7 and up
Product Bullets
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Warranty

Included Coverage from Astell and Kern: 1 Year Limited Warranty

Category ID: 8 | $899.00